The least risk is?

Put an ad on here first and see how it goes. At least you don't pay the listing fee and you still have the PayPal protection.
The only advice would be to wait for the payment to clear (ie. is transfered from PayPal to your account) before you post. If the payment is made with the credit card (and not with a debit card) the buyer can always use the chargeback facility if they're dodgy under the excuse, that the item wasn't as described or they haven't received it.

Thats the part I dont get. Paypal protection as i understand it, is for buyers only.