A bamboo floor goban?
Yellow Mountain Imports sells a lot of Go gear from China on eBay.
Bamboo is often used for flooring and cutting boards. It is an easily renewable resource and fairly inexpensive. I had long thought that it could be used to make an excellent table goban since its surface can be attractive and stones make a nice snap when slapped on it.
But bamboo as a floor goban doesn't quite appeal to me. I found this item in YMI's inventory.
Because bamboo is made in slats, you need to join several layers together to create one thick block. This creates a somewhat odd appearance on two of the four sides of the goban. You have a monotonous mosaic of rectangles.
The price for this item? $200 - stones and bowls included.