After speaking to technical touch they say rrp is about 250 euro. Buying the gold valves from the US runs close to that after shipping and import duty to the UK. For me, the benefit is a valving tune designed for the wr and enduro riding.
Probably wouldn't be cost effective for the US unless the KYB dealers in the US can supply for around gold valve money?
Unfortunately not here in the UK though. If you can find some YZ sss forks here they are usually in appaling condition and yet still want top money for them!
No need to buy the Gold Valves from the US, you can get them in the UK from PDQ developments, and you get loads of spare shims and a chart so you can go with their valving (which is good) or play with and experiment