This is going to vary greatly by location. You really should check a few in your area. I think in Orlando the average is about $60 for hair and $60 for makeup + add ons like eyelashes, and travel fees. I've seen prices much higher and much lower. Depending on cost-of-living in your area it may be different. Here in Cincinnati/Northern Ky I do bridal makeup and charge $50 for the bride ($20 for a trial and consultation), and $35 for all other faces. I charge a $30 travel fee if it's more than 15 miles, and $15 an hour if they want me to stay for touchups, etc. It's customary in my area for the bride to be more expensive. I, of course had to do a lot of research before setting all of this up--and found how different each area of the country is. You may want to check the ads on different wedding sites, or google "bridal makeup xxx, ny" Most places have search information set up like that. Also, check with past brides in your area for recommendations--this may be very helpful as some artists do this on the side and do not advertise (like me!).
If you decide to go to a department store to have the makeup done, expect a 2-3 item purchase per face (including trial)... that's pretty standard.
Hope this helps!