I've got the port setup for the Canon 100mm L macro. I purchased it used (here, as part of a package), having just had brand new glass installed in it. I used it once and it sat on my shelf the rest of the time. Glass is pristine, the exterior has lots of marks from the Diopter mount but it is functionally fine. I don't have any other info unfortunately, it's their older port and extension so it's no longer on their website.
How about $225 shipped for it, I know that's below market but with the lack of info I think that's reasonable.
Thanks, please let me know if you have any questions!
Edited by lylefk, 22 May 2017 - 07:45 PM.