Online bidders who think coin auctions are a kind of video game do damage, not only to their own credit (if they even have or care about credit) but to portals, auctioneers, consignors and buyers who lost out on bids or who will pay ever-higher premiums when they do win coins.
I used to sell on eBay and had to follow up on no- and slow-pay buyers, often leading to uncivil messages that made me stop doing business on that portal, content to consign to popular auctioneers and pay 10-15% seller fees in addition to more fees for photos and listings
