My wife sells on eBay since 1999.
As time moves on, eBay increases buyer protection. Just a few months ago she sold a 15 year-old quality acoustic guitar, described accurately, for (if I remember correctly) $910 plus $75 shipping. The seller received it, and wanted to return it based on "item not as described." It was a first time experience for her, so she politely refused. The case escalated to a point where eBay got involved. Turns out, eBay's computer automatically decides in the buyer's favor. They don't even look at the case. I had to research that online to believe it.
PayPal immediately reversed the seller's payment.
Shipping the guitar to the seller cost $137 instead of $75, so my wife had to bite the $62 difference. The seller sent the guitar back, and it was indeed as described. She put it on Reverb and it sold immediately for $900, and she got an out-of-this-world positive feedback for it.
Weeks later, eBay charged her for the return shipping. What do you know . . . again $137. So my wife lost 2 x $137 on shipping, a total of $274 because of this buyer. That was the last time she sold something like that on eBay. It's one thing to pay $10 for shipping; it's a totally different thing to lose hundreds of dollars!
So what can you take from this? File a claim with eBay, "item not as described," and they'll refund your money in full.