MAC Makeup Brushes Inexpensive Substitutes by EnKore Makeup
There are MAC makeup brushes that can sell for $40 each. If you don't have that kind of a cash here is a video that will show you which ones you can buy for a fraction of the cost, but get the same results as the more expensive brushes.
I also find Sonia Kashuk brushes to be a great value; they're pictured below. Sonia Kashuk brushes can be found at Target.