They have a shop in the old hingham shipyard now shopping complex. After watching then drive one around and get in the way, I would rather have a decent side by atv and a Munson boats landing craft for the money.
I saw one in downtown Houma across from a museum just recently. There was another one sitting behind the building that was in really bad shape - had bushes growing through it. There was a outfit in Chattanooga that ran a few authentic WWII DUKWs a few years ago. Not sure if they are still there.
There’s one commercially operating down in South Padre Island, TX, LARC 20 model if I recall correctly, along with about 5 others at the owners shop for parts.