yeah, you can order them straight from the man himself, or use Ebay. i just won a 70s version of the L500 just a few days ago...and let me say...its freakin amazing.
I would stay away from Ebay unless you know EXACTLT what to look for. There are alot of the knockoffs on ebay and very few genuine ones. The Genuine ones go for more $$ on Ebay than they usually do new from www.Billlawrence.com