Ebay soiled its own nest a few years ago after making a series of misguided decisions. Dumping PayPal for its own system (to grab the cash) that really doesn't provide the global protection offered by the former, was only one of several. Shifting almost all its protection from the seller to the buyer was another. Almost every photo gear seller on Ebay has had problems with feral buyers since - as I did in 2019 with someone who had buyer's remorse, fabricated an excuse to get their money back, and then wanted to keep the camera, until I threatened civil court (small debt) action by a lawyer - fortunately for me, both the buyer and seller lived in Melbourne, so I could do this. Only then did I get the camera back, without any assistance at all from the cut-and-paste template customer service staff at Ebay.
As a direct result, I've not sold anything on Ebay since and I now restrict my buying to whenever I can get the best possible price on small items, usually after checking all other available options - charity shops often turn up many small items at much lower prices than Ebay sellers want, often because the op shops are where the items being offered on Ebay are sourced anyway.
Until 2019 I bought +/-AUD$2000 worth of items every year, from Ebay, but after they shafted me on that camera sale, I've not spent anywhere near this on Ebay in three years. Their loss.
I have noticed this year that very few sellers are now offering quality cameras, lenses and other photo items on Ebay. Even as recently as one year ago, I could input a camera brand name (for example, Fujifilm XT2) and find several items on offer Now... nothing. Occasionally, one turns up. Not often.
A little lateral thinking can solve problems here. Often as not, there are alternatives to selling on Ebay, most likely a consignment sale (and consequently a smaller payment) with a reputable camera dealer, without the hassles of having to deal with rogue purchasers out for what they can easily get, or those annoying buyers' remorse transactions.
To me, it's that Ebay has now had its day, and its time as an important merchandiser is quickly passing. As for suitable (and easily accessible) alternatives, well...