What a waste! It's so much fun.
Somehow I have been invited by several people. I have a make up shopping friend whom I met at make up school. People know I'm a make up shopping monster. As soon as I hit the MAC store there is no more space for reason
I leave with one or two filled bags (two if I buy several bottles of brush cleanser and make up removers etc), then we stop for a bite and check te goodies and contemplate going back for a few items. I usually go back two or three times after the initial haul.