I meant this:

http://www.calfeedesign.com/bamboo.htm

A bamboo frame runs at least 2700-3200$.

Now to be fair, the guy who is building the custom frames for yuppies is also behind the project in Ghana. The real problem with a bamboo frame is that it isn't the sort of thing that can be mass produced. It is sort of an artisan type of thing - someone with a lot of experience hand-building them one-by-one. Anything like that made in the U.S. is going to be expensive (I guess another way of looking at it is that in our world, metal is still too inexpensive). In the 3rd world, that wouldn't be the case.