That's a little taboo, but not a big deal. I don't know of any. Oh wait, do a search on ----, they should have some.
Why don't you change your question to asking if anyone here will send you caulerpa when they trim out their fuge? I bet you can find someone if you offer to pay all shipping costs plus maybe a little more for the trouble. That's probably the cheapest and best way to get some (short of from a local friend's tank).
Any one willing to work out a deal with reefer44?