We bought a used set of Motons for brian's 328 and had some issues with the canisters. I wrote and called Moton USA in cumming and recieved prompt support and assistance. 20 minutes later they called me back again telling me to come up to the shop and they would show me different options for the replacement of the canisters and had some potenial left over ones from rebuilds that I could get a deal on. I've never got support like that from a company period. It's great to see customer serivce is alive in this economy!
They are expensive because they have actual usable compression... I love konis but the lower you put your car the more they bottom out because of the compression.
They were bought used. You could not expect them to fix it for free. Good customer service from the sound of it.