I go to Spearfish in the Park in Spearfish South Dakota and they always have a good amount of venders with a wide varity of crafts. They have loads of good food and it goes on for 2 and half days. I don't know what the tables pay for it, but since it is a big annual event, I am sure it would be a good price on the tables.
This is the first year I am going to try to sell crafts at a craft show in my town. The tables are $10 apiece and they usually have around 8 or 9 booths. It is put on by the senior citizens center and they always serve great Indian tacos and homemade pie and baked goods. I think they would do better on a Saturday but they always do theirs on a friday in October, probably because they don't want to work on saturdays.
If it is something you plan on doing each year, I would advertize it that way. L.'s 1st annual craft fair will let the venders know that they are working up a clientell (sp) for your area and they will be more willing to come. It also lets the locals and semi locals know that you will be doing this each year and they will be more willing to come see what it is all about.
Good luck.