They have not shut down, but they are trying to sell the business. They're open until that happens and new owners take over.
I bought a couple of canes from them last fall. I described their use here:

http://domina.ms/~domroot/thebuzz/ubbthreads.php?ubb=showthreaded&Number=19304#Post19304


https://www.cane-iac.com/