I buy pasteurized egg whites and drink them raw! I usually consume about 120g protein a day in these, if not more.
Egg whites are completely fine to drink/eat raw as long as they are pasteurized, and the cost for 28g protein in egg whites works out to $1.08 at superstore, and my protein powder works out to $0.83 for 24g, so its not much more expensive than powder and it has lots of nutrients etc.
I now don't even use protein powder and have completely replaced it with raw egg whites!