Where do you get your protein?

Since we'll be moving there in about six weeks - actually, we drive out of WA State in exactly 6 weeks! WOW!  So I guess we'll be there in about 7 weeks.  Just wondering about good places to buy protein.  Are there places that you find are GREAT deals? 

I buy the Champion Nutrition Pure Whey Stack - Cocoa-Mochaccino is my fav!  I am wondering what kind of prices you can get it for there. I know I can always order it online from vitalady for $37.99 (plus shipping) for the 5-lb jar...are there any good places locally to buy it...we'll be sorta near Columbia (will probably go there once a week or so).

Thanks!