fair play i dont know why every one slates koxx for being to expensive, just because the level boss 60 doallers each, that was probly materials, the amaount of engineering that goes into making any frame with all the cnc components is alot. and it takes a fair amount of time to design the frame and get the perfect geo. but not only that the tooling for the production line costs so much its unbeliveable as i should know as i am a tool maker, the smallest forming tools going cost so much. and im pretty sure the over heads for the factory are pretty high as well as paying staff. so all in all 400 quid for a frame is ok, unless of course you can make a better one your self in the garage with ur 300,00k cnc 5 plane machine and tig welder