surfin,
Possibly
Several things are to be considered
#1 (and most important) the vendor
-Do they require a receipt...or is the UPC (bar-code) enough?
#2 The seller
- Did he get it from a wholesaler? Or did he buy it from best buy/compusa and now doesnt want it.
Either way you're not likely to get a rebate
Because the vendors ALWAYS want receipts/invoices....and if he bought it from a retailer he's most likely gotten the rebate himself.