Bridesmaid Hair and Makeup Cost

I am curious to hear what everyone thinks about how much a bridesmaid should pay for her hair and makeup. I was recently in a wedding and I paid $130 all together for hair and makeup.

For my wedding hair is going to cost $85 a person and makeup will be $75 a person for a total of $160. I really would like all of the girls to get both their hair and makeup professionally done but since I can't pay for it for them I am thinking I should give them the option to do their own makeup, I would really like them to at least have their hair professionally done. Does this sound reasonable?

It's $60-$70 for hair depending on the style and $70 for reg. makeup and $80 for airbrush

I asked that they all please do hair, and I made makeup optional... All but 2 girls are getting makeup, and the other two are doing their own