Where to sell nest boxes for solitary bees?
I'm posting here to ask for some advice. I'm a graduate student studying solitary bee ecology in California. As part of my research, I purchased bird houses from Forrestry Suppliers ( http://www.forestry-suppliers.com/product_pages/View_Catalog_Page.asp?mi=5106 ). I removed the face of the box and put in a bee nesting block. The bee nesting block is a styrofoam block with holes in it where solitary bees build their nests.
I'm finished with this part of my research, and I have many, many leftover nest boxes. Solitary bees are great for pollination. Also, they are not aggressive and don't defend their nests like honeybees.
So I was wondering if people would be at all interested in purchasing these to put in their gardens. I was thinking of selling them for maybe around $5-10 each. I can even include the original wooden face if someone wants to use them as a regular bird house.
But I'm not posting here to sell them. I'm wondering if anyone here knows where one could sell an item like this. I checked on eBay, which does have a gardening section, but I'm not sure if people will really see my ad there. Are there other similar websites that gardening enthusiasts frequent?
I have photos of what the boxes look like here:
Thanks in advance!