@dpolen - As for the exact model I'd have to go look at the paperwork, of which I'm not exactly sure of it's location. I'll give them a call and ask. They keep all those records. It was around $4k.
As for ease of moving it... it's pretty heavy. It takes 2 people to drag it around on dry land. It slides pretty easy when it's inflated. All and all it's way easier then a hoist. Most of my neighbors have hoists and they struggle in the muck every year! Then there's me, floating my dock into place tying it off and opening a beer.
In the fall I pull it into my backyard, deflate it and fold it onto itself. Pull the compressor box off and store that in the garage.