TBH £628 from DPM performance is a bloody good price!!!
I had some KW Variant 1 Inox range for my 2007 Audi A3 and they were fantastic, they were on the car 8 month and used in all conditions.
I removed them to turn the car back to standard and they were like new, they just required a quick clean with soapy water and the allen screws in the adjuster rings come straight out and the rings span like they were brand new!!!!
Now i've just seen the price for them at DPM I think i'll be having a set!