Ebay fees, even including Paypal, aren't 20%.
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Not even close....you people are funny. If you actually used ebay, you would know that fee calculation isn't even close.
I was a powerseller. I used ebay quite a bit. Yeah... fees are quite close to that (they are closer to 15% for the fees themselves, but consider shipping and insurance as a fee... this isn;t something you ship in a $10 flat rate if you;re smart IMO).
Really the only way to drop it below that is to create a subscription as a seller on eBay, something most folks don;t do unless they are selling a ton of merchandise. I am not sure it's even an option unless you sell a certain amount of product first, but I could be mistaken on the last part. I didn;t become aware of the "pay a flat fee monthly to receive a seller fee discount" option until I had sold a couple hundred items with feedbacks.