Trying to compare the buying practices of a Retail Business with a Pawn Shop is rediculous. You will never see a store owner out the back door haggling with the truck driver about the final price a shipment before he drops the delivery at a retail store. You can't compare ordering from a distributor for a retail store, (and also backing those products after selling them) to trying to get the lowest price you can for a PS3 that some dude probably stole or took from someone that owed him for drugs. Most people that took their ass down to the local pawn shop basicly are at the point of no where else to turn for money. These pawn shops know it, and they hardball because of this well known fact.
Look, if you bring cameras into your business, you are ASKING for it.