I found that Tandy leather had thier snaps and chicago screws on sale.
I got 100 of the Line 24 snaps for $17, and the chicago screws were 10 for $1.99. I happened to be attending a class in Irving Tx so I stopped by the store there, but it is listed on thier website too.
If you are in the market for those now is a good time to stock up. That is about half price on both of those, and they don't get old or spoil.
Just an FYI
Tandy Leather Factory - Chicago Screws
Tandy Leather Factory - Line 24 Snaps Nickel Plated 100/pk
And just to add, if you have never used these snaps......they seem much better than the ones I have found at fabric stores.