We have been selling on ebay for approx 6 years now, and have had very, very mixed results in dealing with seller protections.
Basically all sellers have been scammed by customers through ebays moneyback guarantee and the abuse ebay allows to occur. As you said, no buyer ever says its buyers remorse, and any buyer selecting "item not as described " will always get a return even if you dont offer returns, and even if it doesnt seem to make sense or be a valid reason. All buyers who buy from sellers who dont offer returns know they can and will game the system against you, just because they know they can and will get away with it.
Recently we had a buyer claim an item wasnt as described since it was delivered 3 days prior to the estimated delivery date, and not on the actual single day ebay estimated, but the buyer also lied and said it was late. Ebay didnt care, it's all still our fault according to them. We dont offer returns but of course ebay has forced us to accept the return and lose nearly $65 total in shipping both ways. Sellers cannot control the estimated delivery date in any way, and can only lengthen the period by adding handling time. Still, ebay doesnt care if you mark "economy shipping " they will still arbitrarily choose their estimated dates and will hold any deviation against you. Goodluck ever shipping parcel post or smartpost without risking defects.
We specifically include " all items as is, all sales final, no returns or refunds for any reason" in our listing description because of the mentioned problem of having buyers try to negotiate further discounts after the sale. We do include the ability to submit best offers, however we do get customers who try to demand further discounts once they have the item. I think we have all also experienced this type of buyer abuse at some time too if you've been here long enough.
Ebay has an implicit buyer biased policy, and the buyer is never wrong until they get banned. Ebay once had the possibility for negative buyer feedback but now censors all negative buyer feedback by not allowing it, thus removing the ability for sellers to due their own due diligence about the trustworthiness of buyers.
This whole system is very bad but has been this way for a long time.
Id estimate that 1 in 10 times ebay will eventually back a seller, always on the final appeal if ever, but its rare. Ebay also does not take just the individual transactions into account, they base their decisions off of your previous history of appeals too. Having multiple customers return damaged or used items, or items missing parts, and notifying ebay of this will add to a record. The truth and facts of individual transactions dont matter as much as your record, and having multiple buyers with similar problems may lead ebay to deny cases or appeals simply because they have honored others in the past. This is unfair of course, every transaction and outcome should be based on the merits of itself alone, but this is not how ebay operates. If you win an appeal its usually actually ebay themselves who pays you, not the customer, as they usually still get away with it.
We all know ebay reps have very scripted responses and dont always explain with reason, so much so that some can appear robot like in chats and messaging when in fact its a real person. Also, ebay used to have their phone number readily available and able to be called 24-7 but now they are making it harder and harder to have live conversations with real people and you cannot call them. If you request too many interactions, you will find yourself temporarily banned, so dont ask ebay for help too often or you may find yourself permabanned.
Dont know if this will actually help anyone, but hopefully its insight for some of us in this echo-chamber. Goodluck to you all, but always be wary as every transaction is at your risk and final decisions about your money are not in your hands.
