In an effort to achieve maximum exposure for your prints and boost sales you might wanna have a look at these two websites. They are worth spending some time giving them a test run...

 http://www.artflakes.com/de

& 

  http://www.juniqe.com/

&

some bonus...

 http://mitvergnuegen.com/

 http://sodapop-design.de/

 http://cale-magazine.de/

 http://www.dontkillmyvibe.net/