Just picked one of these up in store:
Don't know what price they started at but they were £90 at one stage.
Cosmetically similar to this Sparky model although I don't know how similar the internals are:
The documentation names Sparky on the Declaration of Conformity.
It's a big, heavy bugger but I have a fireplace to open up and, with a 5-ye ar guarantee, I thought £30 was worth a punt.
Oh, and the max bits are a third of the price at Toolstation that they are at Wickes.