Used Optimizing for sale (3,168)

  • Sort results

  • Lowest price Highest price
  • Newest listings Oldest listings
  • Shortest distance Farthest distance
  • Newest year of manufacture Oldest year of manufacture
  • Latest update Oldest update
  • Manufacturer A to Z Manufacturer Z to A
  • Relevance
Lowest price
Price
Highest price
Price
Newest listings
Release date
Oldest listings
Release date
Shortest distance
Distance
Farthest distance
Distance
Newest year of manufacture
Year of construction
Oldest year of manufacture
Year of construction
Latest update
Update
Oldest update
Update
Manufacturer A to Z
Manufacturer
Manufacturer Z to A
Manufacturer
designation from A to Z
Description
designation from Z to A
Description
Model from A to Z
Model
Model from Z to A
Model
Lowest reference
Ref.No.
Highest reference
Ref.No.
Shortest runtime
Runtime
Longest duration
Runtime
Relevance
Relevance
Listing
Optima 850 2062401 MKN Optima 850
Optima 850 2062401 MKN Optima 850
Optima 850 2062401 MKN Optima 850
Optima 850 2062401 MKN Optima 850
Optima 850 2062401 MKN Optima 850
Optima 850 2062401 MKN Optima 850
more images
Germany Buseck
1,206 km

Optima 850 2062401
MKNOptima 850

Certified Dealer
Call
Listing
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
CNC Horizontal Machine centers  Busellato Jet Optima C21 D 2018 Busellato Jet Optima C21 D
more images
Netherlands Wijchen
961 km

CNC Horizontal Machine centers Busellato Jet Optima C21 D 2018
BusellatoJet Optima C21 D

Certified Dealer
Call
Listing
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
Edgebanding machine Homag Optimat KAL/310/8/A20/S Homag Optimat KAL/310/8/A20/S2
more images
Germany Germany
1,467 km

Edgebanding machine Homag Optimat KAL/310/8/A20/S
HomagOptimat KAL/310/8/A20/S2

Certified Dealer
Call
Listing
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
HOMAG Optimat KL 78/A20/S2/Z HOMAG Optimat KL 78/A20/S2/Z
more images
Netherlands Netherlands
1,192 km

HOMAG Optimat KL 78/A20/S2/Z
HOMAGOptimat KL 78/A20/S2/Z

Certified Dealer
Call
Listing
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
Weeke Optimat BHP Vantage 34M Weeke Optimat BHP Vantage 34M
more images
Denmark Denmark
1,192 km

Weeke Optimat BHP Vantage 34M
WeekeOptimat BHP Vantage 34M

Certified Dealer
Call
Listing
Floor grinding machine Optimat BD 150 Optimat BD 150
more images
Poland Gorzów Wielkopolski
1,566 km

Floor grinding machine Optimat BD 150
OptimatBD 150

Call
Listing
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
Multifunctional OPTIMAT RAPTOR C3-F4 OPTIMAT RAPTOR C3-F4
more images
Poland Gorzów Wielkopolski
1,566 km

Multifunctional OPTIMAT RAPTOR C3-F4
OPTIMATRAPTOR C3-F4

Call
Listing
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
Membrane vakuumpress OPTIMAT FACTOR OPTIMAT FACTOR
more images
Poland Gorzów Wielkopolski
1,566 km

Membrane vakuumpress OPTIMAT FACTOR
OPTIMATFACTOR

Call
Listing
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
Optimisation CROSS CUT 306 4000 mm TechnologieCNC CROSS CUT 306-4M
more images
Poland Gorzów Wielkopolski
1,566 km

Optimisation CROSS CUT 306 4000 mm
TechnologieCNCCROSS CUT 306-4M

Call
Listing
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
Planer and thicknesser OPTIMAT RAPTOR C4 OPTIMAT RAPTOR C4-F2
more images
Poland Gorzów Wielkopolski
1,566 km

Planer and thicknesser OPTIMAT RAPTOR C4
OPTIMATRAPTOR C4-F2

Call
Listing
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
Surface planer OPTIMAT SOLID W 520S OPTIMAT SOLID W520S
more images
Poland Gorzów Wielkopolski
1,566 km

Surface planer OPTIMAT SOLID W 520S
OPTIMATSOLID W520S

Call
Listing
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
Multifunctional OPTIMAT RAPTOR C4-F3 OPTIMAT RAPTOR C4-F3
more images
Poland Gorzów Wielkopolski
1,566 km

Multifunctional OPTIMAT RAPTOR C4-F3
OPTIMATRAPTOR C4-F3

Call
Listing
Thicknesser OPTIMAT TYTAN G630 OPTIMAT TYTAN G630
more images
Poland Gorzów Wielkopolski
1,566 km

Thicknesser OPTIMAT TYTAN G630
OPTIMATTYTAN G630

Call
Listing
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
Edgebanding machine Optimat One Optimat One
more images
Poland Gorzów Wielkopolski
1,566 km

Edgebanding machine Optimat One
OptimatOne

Call
Listing
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
Lead screw/feed screw lathe/Optimum OPTIMUM D560x1500
more images
Germany Bruchsal
1,259 km

Lead screw/feed screw lathe/Optimum
OPTIMUMD560x1500

Call
Listing
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
6040 - BAND SAW, TOPTECH / OPTIMUM GB 42 Toptech / Optimum GB 4240
more images
Hungary Tatabánya
1,982 km

6040 - BAND SAW, TOPTECH / OPTIMUM GB 42
Toptech / OptimumGB 4240

Certified Dealer
Call
Listing
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
Band sawmill OPTIMAT TMG790 AS OPTIMAT TMG 790 AS
more images
Poland Gorzów Wielkopolski
1,566 km

Band sawmill OPTIMAT TMG790 AS
OPTIMATTMG 790 AS

Call
Listing
Bench drill OPTIMUM D 23 Pro-Set OPTIdrill - Exhibition machine - OPTIMUM Tischbohrmaschine   D 23 Pro-Set
more images
Germany Bad Honnef
1,107 km

Bench drill OPTIMUM D 23 Pro-Set OPTIdrill - Exhibition machine -
OPTIMUMTischbohrmaschine D 23 Pro-Set

Certified Dealer
Call
Listing
Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine - OPTIMUM Bohr- Fräsmaschine   OPTImill MB 4
Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine - OPTIMUM Bohr- Fräsmaschine   OPTImill MB 4
Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine - OPTIMUM Bohr- Fräsmaschine   OPTImill MB 4
Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine - OPTIMUM Bohr- Fräsmaschine   OPTImill MB 4
Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine - OPTIMUM Bohr- Fräsmaschine   OPTImill MB 4
Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine - OPTIMUM Bohr- Fräsmaschine   OPTImill MB 4
more images
Germany Bad Honnef
1,107 km

Drilling and milling machine OPTIMUM OPTImill MB 4 - Exhibition machine -
OPTIMUMBohr- Fräsmaschine OPTImill MB 4

Certified Dealer
Call
Listing
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
Edgebander BRANDT OPTIMAT KD 68 CF BRANDT OPTIMAT KD 68 CF
more images
Poland Miechucino
1,717 km

Edgebander BRANDT OPTIMAT KD 68 CF
BRANDTOPTIMAT KD 68 CF

Certified Dealer
Call
Listing
more images
Slovakia Kežmarok
2,038 km

Automatic optimising end cutting saw
SalvadorSuperpush 200

Call
Siegel

Trust Seal

Dealers certified through Machineseeker

Trust Seal
Listing
Pillar drill Optimum OPTI B34H Var
Pillar drill Optimum OPTI B34H Var
Pillar drill Optimum OPTI B34H Var
Pillar drill Optimum OPTI B34H Var
Pillar drill Optimum OPTI B34H Var
Pillar drill Optimum OPTI B34H Var
more images
Germany Sonneberg
1,372 km

Pillar drill Optimum OPTI B34H Var

Call
Listing
Mecamarc Optimeca Mecamarc Optimeca rec 2962 C5 12
more images
Geisenheim
1,179 km

Mecamarc Optimeca
MecamarcOptimeca rec 2962 C5 12

Call
Listing
Sorter OPTIMUS WS 45200 OPTIMUS WS 45200
Sorter OPTIMUS WS 45200 OPTIMUS WS 45200
Sorter OPTIMUS WS 45200 OPTIMUS WS 45200
Sorter OPTIMUS WS 45200 OPTIMUS WS 45200
Sorter OPTIMUS WS 45200 OPTIMUS WS 45200
Sorter OPTIMUS WS 45200 OPTIMUS WS 45200
more images
Poland Topole
1,694 km

Sorter OPTIMUS WS 45200
OPTIMUSWS 45200

Call
Listing
OPTIMUM water cooler + dosing kit Sorema OPTIMUM
more images
France Vincennes
901 km

OPTIMUM water cooler + dosing kit
SoremaOPTIMUM

Call

This may be of interest to you

Machineseeker Auctions

Sales with maximum attention: Selected auction highlights

EHF Champions League Sponsoring

For the third time in a row: Machineseeker is title sponsor of the EHF Champions League

Strongest Forklift Trucks

Photo gallery: the 10 strongest forklift trucks in the world

Machineseeker Group Aquire Gebrauchtmaschinen.de Used-machines.com

Machineseeker Group acquires the platforms used-machines.com and Gebrauchtmaschinen.de

Sell more machines!

Sell now on Machineseeker! Over 250,000 inquiries per month

Gindumac about smart sales strategies and the importance of online platforms

About smart sales strategies and the importance of online platforms