Ebay seller protection non existent.

Ebay offers almost no protection for small sellers offering either new or used merchandise.  Case in point I sold a PC Motherboard I had bought brand new (Intel) from Amazon originally. This board was used flawlessly for over 4 months. When we shipped it to buyer in ORIGINAL Motherboard box (designed for shipping) and even put this box in ANOTHER box with packing to insure no damage. Buyer waited a week and filed a complaint that 'AS IS' USED item we sold him was not as described and dead on arrival. This buyer has a 66.0 % feedback rating, as opposed to our 100 % for over TEN years of buying and selling on EBAY!  Ebay sided with this buyer even though it was 100 % working by our reputation. After going through an agonizing amount of a 'Robot Operator' I was able to get through to an Ebay Rep. The first one didn't speak English very well and I suspect just hung up on me, even though I was calm and explained I needed help with this issue. The 2nd Ebay rep spoke better English but told me 'You don't know the situation'..I spoke to her supervisor which offered no help and basically spoke in script like terms telling me to refund the buyer's money or suffer the wrath of Ebay! I'm crying at this point.  Buyer said he took it and had it tested by refused to provide proof. AT this point the 'Buyer' has had our Merchandise for this time frame and possibly he has damaged it. We will likely throw it in the garbage if it is damaged. All because EBAY does not stand by the seller. This isn't fair.