How much does it cost to have a common chip like this slabbed?

If it cost them $5 to have this seller put it on ebay for them (at least it was the going rate for Mr Lister when he was in business to put your items on ebay) and shipping is $5, how much profit is there on this chip to sell it the way it is?

Thanks if you answer (I'll be back later)

Dave R-6620