Just had mine done (see post under 'problems') Exhaust is only partly stainless and my flanges looked like they were done for but they werent. Exhaust man said if they had been beyond repair you couldnt quarantee welding on new flanges due to the upturn at that point and closeness to the exhaust sensors. I had mine cleaned up, new gaskets and bolts for £160 so yours sounds a bit cheap. New flanges will be a real tricky job and if they simply weld the exhaust to the manifolds you will be in real trouble if you ever need to remove the exhaust for new clutch etc.