Sorry to hear that. Same thing happened to me when a local seller used "being out of town on business" as an excuse for putting off the local pickup I'd requested in lieu of shipment of a Radius/KDS LCD. Only $40 or $50 in my case. Thankfully, that's a cheap credit hour in the school of hard knocks.
Sounds that we were trying to get the same item, don't have a clue who this guy is.
Nasty behavior.
I've got my suspicions about sellers(?) who've begun listing multiple, similar items ending in a short time frame:
Such appears to have instigated a "sniping frenzy" recently on PowerCache Accelerators. Since lowball bids with no incremental bidding activity over the course of the auction have become the norm on this kind of listing, I'm guessing a new tactic for instigating bidding wars has been deployed. Dunno the sellers(?) that may have been involved and don't care to do the research. I don't recall the Accelerators and bids involved in the round I noticed, but it could be a new version of shilling type activity.
When a sniper (the ONLY way to do eBay IMO, bidding wars during an auction only benefit the seller and who needs that?) is outbid on the first item ending, The buyers can be drawn into overbidding on the second or third listing set to end within minutes for a similar item.
Almost got drawn into overbidding that time around, no cost credit hour! Such is the only plausible explanation I've come up with for having multiple listings for similar items end in quick succession.
Such sales would also tend to inflate perceived value of items as a side benefit.
If I were of questionable character, that's the way I'd set that kind of thing up to maximize profits . . . just saying. :