Just ordered a couple of these - which cost me about the same as one Duracell AA would here. Fine for leaving at work - and I may even be pleasantly surprised by them when they arrive. They have a vaguely Fenix-like appearance so they may be nicer than I'm expecting. Wonder how long they'll take to arrive.
I have found that with eBay sellers who use that picture of a black 1xAA light, you could receive almost anything. One time I ordered a few lights with a picture just like that, and I received this instead, which is actually a high-quality light. But another time I received some that looked somewhat similar, but they had a slippery, shiny black finish which looked like plastic but was actually poor quality painted aluminum. And I threw them out or gave them away, because they flickered constantly and were total junk.
My #1 recommendation for an ultra-cheap 1xAA light is the Powerlight, which actually has one of the most usable, nicest looking beam and the longest runtime of all my lights.
There always is that chance - the picture looks exactly like the Powerlight - I have one on order from DX just now. I thought that for the money it was worth a try. After all, two of them cost about the same as a good alkaline here.
It'll be interesting to see what I get when it eventually arrives.
One was OK - but I appear to have lost it somewhere, the other was too short for an AA - I had to jam the tailcap back on but it works and is brighter than the Powerlight. There is quite a bit of discussion of it there. the last dozen or so posts are about it.