I love the green boxes. Last time I moved my roommate spent almost $50 on cardboard boxes. After unpacking we immediately threw them away (with the additional hassel of disassembling them). This is a far better solution.
I hope they become available in my state next time I have to move.
I think the idea is great also. http://frogbox.com/ is a company started here in Vancouver who does the same thing. they also have started franchising it.
I have never used them but had a friend looked into using them and said it was too expensive compared to regular boxes. It looks like it cost about $110 for boxes for a two bedroom rental. Guess the convenience and green benefits are the selling factors.
I hope they become available in my state next time I have to move.