Yeah, your standard paypal account allows to you send money for free (by any method: bank, credit/debit, etc.) and receive money for free only if it's by direct bank transfer.
In order to allow buyers to pay you by any means of their choice (read: debit/credit cards), you would need to upgrade your account. With the upgraded account, you still send money for free, but any incoming funds (no matter the source type) is charged the fee (about 4%, I think). Besides the constant feeing when buyers pay you via Paypal, you don't pay anything for the upgraded account.
It's all a "cost of business" thing, and I think it's generally accepted that you should upgrade your account if you plan on doing much ebay selling. You likely loose about 10% once you calculate the listing fee, final value fee and paypal fee. You could always not upgrade your account and make special mention in all your ebay descriptions that paypal payments can only be made by direct account transfer. But that doesn't really make you the easiest seller to buy from, IMO.