Hopefully someone from EarthBox will tell us how many are sold per year. Both nationally and world wide.
I'll be going into 2010 with 18, and I know 3 people who have recieved them as gifts, accounting for another 7.
I've always bought in lots of 5 because there is a little savings that way. And once I bought some on the 'bad caster hole' sale.
And, yes, they are made out of recycled plastic. I've forgotten the %, but I remember being impressed with how high it was.
Deb
Just want to clarify something EarthBoxes are not currently made from recyclable plastics, they can be but are not currently. They are recyclable.