Monogram DE sells airbrushes and I think they market them as Revell. Most of them were Badger clones, the 175, the Vega 2000 etc... I would check the price on the real Badger models before buying the Revell. I'm not sure what Badgers run where you're at, but 150 pounds seems a lot... the complete Badger 175 set in the states is about 65 US dollars. And comparable prices on the other Badger sets..
---edit--
I looked it up and the Revell "Vario" looks to be the Vega 2000 by Badger.... the set retails here for about $69 US. which translates to about 36.5 GBP... might be cheaper to order it from here and have it shipped! even if shipping is $40(US) that still only adds 20 pounds to the price.... of course I am sure there is an outlet near you that someone can provide you with for Badgers...
here's the airbrushes:
Revell "Standard" = Badger 350
Revell "Vario" = Vega 2000
Revell "Professional"
LOOKS like an Omni 5000 (not sure)
Revell "Flexible" = Badger 360
good luck!