I agree, go to the Fair! We live in a very rural area and I think the booth rental is about $10. I would think that the hardest part is getting a bunch of the first books sold, the others will "sell themselves".
Talk to your friends acrosss the country and offer them something to set up booths and sell for you. There is no need to attend each sale yourself. If you do go the route of getting others to sell for you, make sure to sign all copies, just a thought!