£1500 to fit KO4 on my Fr (05 plate petrol) and that i should be near the 280ish bhp... not something im gonna do but i dont think it sounds like a lot of money for what you get.
£1500 labour charges
That's a whopping 30hrs labour at £50 an hour
Or do you mean thats them supplying the K04 setup and mapping it along with the labour charges?
I suppose thats the risk you take