The problem is that no company is making these helmets anymore. Riddell started the line, then Master Replicas continued for a while, and in the end Gentle Giant delivered a couple (weird looking) scaled helmets (all close to 1/3 if not mistaken). Right now there are a few smaller helmets made by a couple other companies or various fans, but nothing else. In the Riddell/MR/GG size you only have the few already made, nothing else. There are many other Original Trilogy, Prequels or Clone Wars helmets that could be made. Even non-SW helmets.