Long delayed (5 years, sorry!) follow-up: I did get 2-20 ft containers in "weather-tight" condition delivered 2 years ago. This was by the second vendor I contacted. He had an F550 4x4 with a major diesel towing a self-unloading trailer, and he barely made it up after dropping one of the containers at the bottom, which he had to go back down for. The first guy drove 80 miles to me with the containers (after I had described the grade and road surface to him in great detail) and sat at the base of my steep incline, staring at it, for about 20 minutes. When I finally walked down to talk to him, he just shook his head and said "no way". Anyway, the containers have done well. I did have a porky (I think that's what it was) chew a hole through the wooden floor (I initially assumed that shipping containers were steel on all 6 sides, but that isn't so) but I screwed down some 24" wide trim coil left over from what I had bought to squirrel-proof the T-111 siding on my cabin, and have not had a problem in the year since I did that. Ironically, my Terramite is still not down at the property, working to get that done (again) now...