Are you talking about fan made versions or including MR's? I have one from an eBay seller named, cvte66. I believe that's his id at least, I'll double check later today. It looks amazing, one of my favorite props I own. I'll post some pics later today also. I think I paid around $200 for it but I'm not sure if he is actually making any of these anymore. He used to make the ROTJ and the Obi Wan Ep1 saber that looked awesome too.
I got 2 of CVTE66 Luke ROTJ sabers. One with painted copper parts, and the other with all real copper parts (custom made). By one of my friends who also is an RPF member, who worked with cvte66 said that his was the first original design for the movie, but then it got modified by the time it made it to the movies. He really makes great sabers.