K's circuit/grams N1 had some brand new Spoon Showa N1's for around that price iirc. Surley they will be suitable lol.
Personally I would stay away from these if your going to use the car daily. Although they are fantastic quality suspension they are way to unforgiving for normal road use, I have a set in my DC2 with spring rates of 16k - 14k and I can seriously feel every small stone on the road even on the lowest setting.
For a track car yes, for one that will be used every day no.
Personally I would look into the Meister R ones as Kozy says, I was speaking to the Nitron guys at the Autosport show and they rate it highly for both a street driven car and track car.