Hi,
I make my own- eye shadow and lip glosses are really easy and fun to make, but foundation can be tricky to get just right. It took me a few months to get just the right foundation blend- the color was relatively easy, but getting the right coverage, and getting it to last all day, and not look chalky was difficult, and I spent about $75 on the materials.
If you're getting colored micas from TKB for eye shadows all you really need are the sample sizes- they're more than enough for you, and pretty much every other woman you know. It's really fun to get together with girlfriends and have an eye shadow party.
Good luck,
Karen