What is the fee for a seller account?
The only fees for selling are a certain percentage they take out of your sales (for example, if you sell $50-$99.99 in a month, they take 27%, if you sell $100-$199.99, they take 23%, etc). The more you sell, the less the percentage they take. It's free to list in your store. It does costs $0.15 to list an auction, with no final value fees. I've been selling there for a couple years and have almost 70,000 cards listed. It is a bit tedious to list, but once you get things listed, they stay there.