They're sold out of the single AA one - they weren't the last time I looked. The cheapest one I can see there is a 3AAA device which works OK.
http://www.dealextreme.com/p/12-led-uv-flashlight-silver-3xaaa-4014
Or you could buy a pack of 50 UV LEDs for $3 and stick them in a Fauxton which you probably have several of already.
thanks for the links.
I ended up getting a UV 'fauxton' from kaidomain for a couple of dollars. I hope it arrives, kaidomain hasn't been getting a good reputation lately. The paypal receipt from them doesn't actually state what I bought from them...
Not sure if it's of any intrest, but I noticed a UV P60 dropin on the Manafont "New Products" list today "380nm"
http://www.manafont.com/product_info.php/taiwan-3w-380nm-uv-flashlight-dropin-module-42v-max-p-5697
The UV keychains from bestinone have finally arrived and I've been playing with them for the past hour or so.
They're really cool, but are very weak (obviously), and I don't think any of them is a true 365nm - they came unmarked, so I had to guess. One is definitely weaker than the others, but I'm having trouble to differentiate the remaining two.
I can't take any photos because my camera won't allow me to photo anything useful, but I can tell that on a 50 euro bill (and on 10 euro, and 100 nowegian krones) I can see only the luminescent hairs. On the other hand, 200 and 1000 norwegian krones show another image, and below I show what I could catch with the 1000 krones.
Israeli bills don't show any sign of having UV marks. My mastercards show M and C.
My sofa shows signs of my cat's urine.
UV light is fun! :)
Here are some photos of the 1000 kroner bill. A nice broomstick show up where none were visible, and a few hairs are seen as well.
The "390nm" seems a bit stronger than the "365nm" but show marginally better performance (although it doesn't really show in the picture).
You be the judge:
So I guess now I'll have to order the TK-566 365nm (1W, Nichia LED) and the 380nm drop-in (3W, Taiwan LED) from Manafont.
Right? :)
I receive the UV emitter from KD , is in the 'fake' C78 now... the US dollars do not have any mark, my currency have even in olds 80's bills...
The star is printed 'lumileds'...
Sorry i have no Euros here to check , if some member want to send a few I promise a high resolution pìc 
The early incandescent Streamlight 3C-UV lights had 3 x 365nm + 3 x 390nm 5mm LEDs giving you a greater flexibility, a used one of these would be more than ample...
OR
You could install
http://www.lck-led.com/p544/5mm-UV(365nm)-LEDs---10PCS,-40MCD,-1-2mW/product_info.html
in an inexpensive 9-LED host light.