Yeah, eBay/PayPal's fees freakin' suck... You have to clear over 10-15% profit to even make Any profit (if flipping items that is). Welcome to the forum, you can make decent sales/profits here because it's P2P, no middleman taking their cut. However, for things to go smoothly for you here, I would strongly suggest 2 things: 1) write your forum username and today's date on a piece of paper and place it near your items for a picture; this proves you actually have the items, and 2) while you build up your reputation here you should use a trusted third-party escrow, such as
OgNasty. This will not only protect your buyers but also protect you if they try saying they didn't receive it.
Good luck with sales