The problem is, that you don't see Twinsonics very often on ebay over here.
So if one of you want to make good deals, start selling medium conditioned Twinsonics to Europe.
If we can get a Twinsonic for approx. 300€ incl. shipping in Europe, thats a good deal! That's 420$. Shipping might be 120$, so there is 300$ left for the Twinsonic for you.
Condition doesn't really matter, because most collectors who want a Twinsonic in Europe have to take what they get.
So forwarding all good 100$-Craigslist-Twins might be a good deal.