I may be wrong but the last time I listed cards on ebay, the front scan was free and the back was 15 cents. A small price to pay for customer satisfaction but I guess big time sellers don't want the aggravation of having to make all those additional scans. Even worse are the ones who post "generic" scans of cards and then add their grades based on their opinions of the card which you never see! You see this a lot in the 1950's cards. I refuse to buy anything from these guys.
My biggest gripe is those who put slabbed cards on ebay and don't put a back scan up. An SGC 30 or 20 or PSA 2 or 1 might have a great front but a horrible back. With the inconsistent grading based on whether a particular company severely downgrades for back damage or not, it's maddening. You need a backscan.
