I want to find a set of two couplers, preferrably btc stainless. Im having a hard time finding a way to get a pair due to they are only sold to professional and approved frame builders, and Ive yet to find a roundabout way, say second hand or a brand that does not have this policy. Any ideas?

And PLEASE save your time and mine if your going to lecture me on their reasoning behind this policy. I also dont need info about installing, safety, etc. Just trying to find a set. Thanks, Lou