Holy crap! I totally fucked up!

What's evil about it? By issuing a refund, the buyer is not losing out on anything. So he won't get his pedal for ridiculously low price, big deal.

npearce, you didn't mail it did you?

If you do choose to mail it, I'll buy from you for $105!
 
Eh, you did the right thing. I really hope that dude gets some use out of it instead of reposting it on eBay.