Can someone explain why this figure is ''worth'' so much?

Alcarin · 2013-08-18T18:13:27.000Z

http://www.ebay.com/itm/380696640423?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 This now passed Darth Malgus, Saruman (in dress from Orthanc) and similar figures... I was watching this figure because I would like it to join my Figures on display and I checked now and was shocked... So as the topic goes can someone tell me why this Jack Sparrow is worth so much?