"There ARE NO COSTS if the Buyer doesn't pay. Not $50, not $1.,.. nothing. They are refunded by ebay when you process the correct non-payment report. So you are engaging a solicitor ROFL, yeah sure you are."

Superficially you are right!

If the non paying buyer is the sole bidder then not much cost, but if he is not the only one, the seller now could have sold to someone interested. These bidders usually move on after losing on bids.