Help from the Crafty Girls (and boys!)

So, I'm going to be participating in my very first craft sale in a couple of weeks. I'm a cardmaker/papercrafter, but I've generally just made gifts for my own family & friends. I've never sold anything.

I need help determining price points for my various items, and the best way of going into a sale like this (ie - should I make every single item one-of-a-kind, or make duplicates of certain cards that might end up being "best sellers")

Any other advice for a first timer? :)

I also posted a blog entry about this, with some more questions, and a few pictures of my crafts:
http://superflashphoto.blogspot.com/2008/11/day-16-on-craftiness.html


Feel free to leave me some advice either here or there! Thanks!!