Reply to "Farmers Markets"

I recently tried a farmers market in my area. I don't think I would do it again only because of the time. Between regular orders and preparing for the market, i was a bit overwhelmed.
I would suggest mostly individual favors. They're the easiest to sell. Then I would do half dozen themed cookies. Dont take too much. If you can sell out the better it is!  factor in your costs to have a table too. Nothing elaborate in any quantity but certainly try to bring something that shows the magnitude of your talent. I'd even have a photo album on the table for people to look through of your sets/favors previously done. Lots and lots of business cards and brochures, if you have them.
I personally wouldn't discount, nor overcharge. I did find that having te prices already marked on my cookies was great! No one bartered no one balked they bought. Also, my personal belief with discounts especially quantity discounts is that it takes me more time the larger the order, so I don't discount at all. Personal choice, of course but you out a lot of work, time and money into making your cookies, can you really afford to discount on top of that? 
Anyway, best of luck if you try the markets in your area. I've heard many 'cookiers' say they do great! 
Oh, one more thing ... I you try to get into a market that tells you they have bakers already, make sure you let them know how specialized you are. Not everyone knows what a decorated cookie looks like!