Hi, first time poster long time unregistered lurker. I work for a small game shop, and awhile ago a regular customer of ours traded in these prototypes "Pitfall" "Stampede" an untitled cart, and "Pitfall 2" I've been tasked with selling these, and we plan to list these on eBay.   I tried searching this site before posting this to see if there was any other posting about Prototypes, saw one about Stampede but that was all.   Before I do that however, I wanted to know if these were worth att