rc-540's aren't cheap, but they're pretty much the only sensible japanese option.
There are other harder-to-find Araya rims out there though: ct-19n / ctl-385 / 20a / rs-430, etc
Otherwise you have all the usual non-japanese choices; mavic, h plus, ambrosio, rigida, velocity, etc.
You can have a dig around here: https://www.lfgss.com/conversations/187300/
rc-540's aren't cheap, but they're pretty much the only sensible japanese option.
There are other harder-to-find Araya rims out there though: ct-19n / ctl-385 / 20a / rs-430, etc
Otherwise you have all the usual non-japanese choices; mavic, h plus, ambrosio, rigida, velocity, etc.
You can have a dig around here: https://www.lfgss.com/conversations/187300/