What a GREAT board! I think I'm going to like it here

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I have been reading some of the topics and everyone is so nice about suggestions and honest critiques of the talents here.
Okay, onto my question:
I have beeb making m&p and other bath goodies (salts, milk bath, fizzies, dusting powders) for awhile. I've given to family and friends and sold a few, too.
Now, a friend has asked me to put my products in her booth (to fill-in the extra, unused area) at an upcoming fiber show. She'll handle all the paperwork as far as taxes, etc (I don't have a business license) because we'll use
her sales slips. She doesn't want any financial part of what I sell, she's just being nice and needs more in her booth (she sells wool).
Anyway, it is a 2 day show and they had about 500 people a day last year (the first year of this festival)

. I know that number is nothing compared to some shows!
So, I am trying to figure out how many soaps I should make, along with the other goodies.

I realize it is better to have too much than too little, but the initial outlay, financially, could be daunting!! My darling husband says to buy whatever I need and $$$ isn't a problem for us. I just don't want to spend money just to spend money, you know what I mean?
I plan on having 4 different scents available for all the products (that way, folks can go with a "theme" if they like). I'll have Nag Champa, Oatmeal/Milk/Honey, Lavender and, possibly, Bay Rum.
The soaps are in molded shapes and I do a really nice packaging job on all the products. Everything is labeled with ingredients (INCI correct) and our name. I'll have business cards available, so people
could contact me if they like the stuff and want more!
I'm okay on what I feel is fair pricing, it's the amount to bring that has me stumped (since I've never done this before!)

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Should I bring 10 of each scent (for the soaps)? 16? 20? Same question for the other products.
HELP!!
ANY and ALL assistance & suggestions GRATEFULLY accepted!!
Thanks, in advance!
soapingwench