So your total fee for selling was about 10%. How much do you think you would have paid if you had sold it in an auction house? How much do you think you would have got if you had been restricted to just people in your immediate area because you posted it on a community board because it cost you nothing? How many people, complete strangers, do you think would be willing to part with that much money if they couldn't have Paypal protection?

All the fees were there for you to see before you listed so you chose to avail yourself of ebay's services. Nobody twisted your arm and forced you to sell it here.