I already replied to your PM, but I’m going to do it here as well just in case other people want to chime in.
Nothing odd about it, and this guy has done this before.
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Time to file some paperwork with eBay to get the auction yanked.
That’ll be happening first thing in the morning. For reference, the required form can be found here.
Matrixsynth needs to pull that post and decide whether they are yet another anklebiter adwords spacer or a blog worth reading.
Yeah, Matrixsynth posts some pretty… Adwords-grabbing things. Loads and loads of posts… I’m glad he posted this, though, because then I was able to see it.
The sellers name and address are in your pm inbox. 
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I sent a couple individuals spare PCBs for free, so I’m not sure if this is someone I helped build one or if they had the boards manufactured on their own.
I really appreciate that. It turns out he had emailed me asking for some help with it in the past. The subject of his message alluded to his having had the boards manufactured himself at PCBEXPRESS. I’m fairly certain that the couple people I sent boards to (two, if I remember right, one in southern California and one in Australia) actually completed their devices and regularly use them.
This guy really didn’t seem to know what he was doing, saying that he was only seeing “all squares” on the LCD, asking if the PIC16F88 had to be programmed, and saying things like “I don’t have smoke so at least nothing is burned out from a mistake or bad soldering.”
Take the few minutes and fill out the forms to kill the auction (eBay makes this pretty painless). If you don’t do this now it will just take more effort next time he does this.
When I confronted this person, he pretended to have no idea about the auctions, etc.
Asking nicely at eBay matched the auction address with his though.
Worst case I’ll win the auction at whatever price is needed then sort it out with eBay corporate later. I’ve got the feedback to take a negative if it comes down to it.
Thanks again for your help with this… I’ll be sure to post the results of it all here.
-Steve