Protein Factory is the way to go man. I just got mine in and it rocks! (granted I have my normal 1 tablespoon of ANPB per scoop.
In all I got: 5lbs. of Ion Exchange Whey Protein Concentrate (4.25/lb) = $21.25
Aminogen added (.75/lb) = $3.75
1 Scoop = .50c
1 Protein Shaker = $3.59
Shipping = 6.59 (they made nothing off of the shippment that I can tell)
Total was $35.68 which I think is pretty good seeing how a lb. of most stuff in any store like Wal-Mart, etc. is about $8.00. Not to mention this stuff is really good and has the best consistency of anything I've tried yet. It mixes very well in water.
Since I'm a dealer of supplements myself, I get my supps real real cheap so I go with MET-Rx or Ultimate Nutrition, but if I wasn't to be a dealer, I would probably go with proteinfactory, because of their price.
I know a bunch of people here are against soy, but I love it. So, Essential Protein with Fiber by MotherSoy and they do send free samples. Check out their website. I think it is MotherSoy.com
It is completely tasteless and mixes easy with just a stir. Also does not get thick.
70 calories, 16 gm protein, 6 gm carb
Whole Foods 365 brand, their brand, of Soy is cheaper and tastes okay, better than whey, but it does mix a little thicker. Better stats though; don't remember, but protein is higher and it has NO carbs.
allthewhey chocolate is great. STAY AWAY from vanilla. its one of those flavors where if you eat a small amount, its really good but too much makes you sick (and remember you'll need 3-5 servings of it daily)