I thought I'd post a heads up /micro review of the Jetbeam IIM I got for £19 delivered before Christmas. I've just had a look and it looks like you can get it for £22 right now.
This is a fairly common form factor - single 18650 cell light.
I bought it as a spare to have around the house, because, for £19, it seemed a good deal.
Having received the light, and used it, I'd change that assessment, and say it's an excellent deal.
Output seems as advertised, build quality is what I expected from Jetbeam (ie, on a par with Fenix and Nitecore), but, for me, the surprise was the functionality...
This has a tail button switch, and a flexible rotating locking mechanism that allows you to lock it on, off, and a few other things.
The light is protected, and single cell, so I'm happy using 3500mAh Sanyo cells for £6 a pop.
All in all, I'd say this adds up to a very good value set up that will exceed the requirements of most users.
Hope that's of use to someone.