are you talking new or used? can you actually buy an umbilical for that price new?
Well, Salvo et all, are out of that price range, so i'd look at Greenforce so you can upgrade later if you like, or a JMD isn't too much more:
Underwater Diving Torches. Prices and Buy Online
My mate has an older one of these and it's bullet proof. I have a couple of Greenforces and they are ok.
If you want 2nd hand there is a Custom Divers one in the personal ads on here......EDIT:
FS: Custom Divers 10w HID Umbilical Torch