Makeup

CHEAP
http://www.eyeslipsface.com/
Essentially, you get what you pay for at the $1/item deal but there are some products that are great buys (lip gloss, concealer, "studio" products, etc...)
I do not recommend the makeup remover, eyeshadows, or eyeliner

www.newyorkcolor.com/
Cheap and quality is okay

http://www.nyxcosmetics.com/
Moderately priced and the quality is pretty good


BEST QUALITY
www.maccosmetics.com/
Expensive but best quality

CHEAP & GOOD QUALITY
www.avon.com/
I love Avon! You can get great shipping deals by finding represenative codes and the quality is superb. It's like department store brands (Lancome, Estee Lauder,...) at a fraction of the price. It doesn't look like you only paid a few bucks either.