Chance Copp

I have just recently listed a bunch of corvette nos cam and camaro cams duvont ect. I was wondering if any of you could take a look at my ebay and tell me if i priced these cams right also i have some that are not in the box but have surface rust but are unused what would they go for?
Also is this a gm cam and whats it worth lol sorry
cpc bc 5 643 camshaft tpi?

http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575378759&campid=5338273189&cust omid=&icep_item=264474073995&ipn=psmain&icep_vecto rid=229466&kwid=902099&mtid=824&kw=lg&toolid=11111