On what basis? It's priced on materials and fabrication time. In terms of performance its been designed to give better mid range torque than the other available alternatives, so worth it from that point of view imo.

It's given results much better in the mid range than the Cosworth inlet and people pay more than £600 for that, and it doesn't even work well on 2.0 NA engines (kills torque)..... but hey, it says Cosworth on it.

Anyway... they're being made at the moment so I'll be able to say if it was worth it some time soon, but I already know it will be given the reports from the two that have been made.