I be interested in buying them.
Been looking for Tatooine ROTJ Cardbacks I think they are worth about £15 each?, but am not 100%.
Let me know when you have a price for them
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Found an Ebay listing which ended for the Tatooine ROTJ Cardback
http://www.ebay.co.uk/itm/142238671971?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Sold for £12.77 but has name cut out