I didn't really have the problem with the e-thugging so much as the not-sending-the-gear-back-right-after-the-refund part. If you're going to have to harp on someone to get them to square up with you, you shouldn't also be a slacker when it comes to sending the part back. That's all.
The long-version doesn't sound nearly so bad... but you were lucky the guy would even talk to you in March. If I sold something in Jan, and Feb rolls around... that buyer owns the part.
