I have an extra undergarment that came with the used drysuit I bought earlier this year. It is a Fourth Element Xerotherm Arctic package with top, pants and socks. It appears to be unused -- the pants still have the tag on. All of the pieces are size XL.
It retails at Dive Right In Scuba for $369.90 and I'm asking $200 for it. Here is the link to the item at Dive Right In Scuba:
https://www.diverightinscuba.com/men-s- ... FUQAvD_BwE