I have gotten a few more Curvy Copter II's printed. I will be assembling them this week, I currently have 0
available. Puzzles will become available for sale as I assemble them, but I have no plans to produce any more after this (but I also said that when I sold the original batch of 15).
Price is $175 plus shipping, just as before. Priority shipping is $15 in Europe, $25 worldwide. If you want registered mail / tracking number (TNT) then that's an additional $10. Sorry about the prices, they are just what the post office charges me. They recently dropped the 0-500g category and now price everything as if it's 0-2kg.
These puzzles are a great bargain. Not only do they look good, they turn nicely and (as I'm told) are hard to solve. Not to mention they jumble. In any case, you can watch a video demonstration
Please send me a PM or email if you would like one.