I think anyone who's tried to sell coins (or banknotes) has had "eBay issues." While the problem can sometimes be the seller (& I advise everyone who sells to be absolutely as explicit/clear/transparent as possible) I think many times the problem is with the buyer (thinking they're getting a better bargain than it already is). Whenever I describe a banknote I always write qualifications such as, "I have attempted to describe the item in the best way possible. Please use your discretion & judge the item from the scans, since I am not a professional grader." However, we can add all the phrases we want (including "Buyer's remorse will not be tolerated") and in some cases you just cannot please the buyer (who thinks they're always right).
Last year, I listed quite a rare circulated
BTV $10 short prefix as
BIN and a buyer gave me a low-ball offer that I accepted. I figured that I would accept my loss and let the buyer win a rare note for a bargain price. This note was problem-free, very crisp strong VF+ with 2 vertical & horizontal folds, super eye-appeal making it appear more EF than VF. The buyer sent me an email stating that he received the note but didn't like it. After I pointed out that there were "no returns" (on my listing) he threatened to give me -ve feedback. He kept hounding & threatening me & wrote that the note was in way worse shape than I described (in my listing) and that my scans were "terrible." The note zero wear (only the folds) & did look amazing because when one scans a VF-EF note with vertical folds (not creases) it can actually look more EF-AU & I believe he thought it was indeed a much higher grade than VF. However, he paid slightly less than VF price & there was no way I was going to refund his money for 2 reasons. First, I had already been through similar experiences with other deadbeat buyers & 1 buyer who had buyer's remorse. eBay still charged me commission for each sale! I repeatedly reported that one seller never paid for his item (& the other returned) but I still got charged commissions. It was costing me a fortune to sell a few notes so I put my foot down & decided no more returns.[Getting stuck with eBay & Paypal fees with no sale will send anyone to the poor house]. I suspect a lot of people have stopped selling on eBay b/c it costs them more money than its worth (with the fees) & all it takes is one or two bad apples demanding returns on a crappy, break-even sales & that can be the deciding factor to leave the platform.
So, to avoid all of this rigmarole, I wrote on this (& all my listings) that there are "
NO RETURNS." I reported this malcontent buyer (who made me the low-ball offer) to eBay that he threatened negative feedback (like "feedback extortion") for no logical reason but eBay would NOT remove the negative feedback. That was my last item sold on that platform.
You should just try to work it out with the buyer & if he starts to get unreasonable, report him to eBay. I wish I had reported my buyer sooner but I waited until after he left the negative feedback (& eBay wouldn't change it even after I gave them proof that he kept hounding me with threats).