Here's my $0.02.
eBay has problems with fraud on both sides - the buying and selling. I can't speak with any authority on auctions that I haven't run but I can tell you that when I've sold personal items on eBay, a lot of the close to retail buyers and almost always the over retail buyers are frauds.
I used to sell gift certificates occasionally. These were items I would ship to the buyer to give myself some seller protection. I used to clearly articulate that I needed a PayPal-approved address within the body of the ad copy. Anytime I had someone buying a $500 GC for close to $500, they invariably had some situation with their address that would've required me to forfeit my seller protection. It was always the old "Well, here's why I'm legit..." story.
Power tools are notoriously high fraud items. If any of you decide to sell some Festool items, please make sure you review the PayPal and eBay seller protection rules. Only ship to PayPal approved addresses (they have a way of certifying that the address of the person is legitimate through a bank account verification). Don't let feedback only be your guide. People have been known to hack into eBay accounts and PayPal accounts and the great feedback you're reading could be the victim's, not the person with whom you're dealing.
If you ignore that and ship to a non PayPal-verified address, and the buyer subsequently tells eBay and PayPal "I was hacked...", you'll be the one who is out. They'll reverse the transaction in a NY minute. You also should consider shipping through PayPal's UPS connection. By doing that, they'll have a permanent record of the tracking information. If you ship on your own, you'll need to keep your own records (and they may ask you to submit them).
Be careful guys. eBay is a lot of fun and I've done a lot of personal stuff with them but it isn't just buyer beware out there. It's seller beware too. Transactions can be reversed months after they've happened and if you can't prove you shipped to a legitimate address, you'll be out of your merchandise and the money you received for it as well. They will take it out of your bank account.