Which Whey Protein to buy on a budget

Just a quick overview of how much protein you're getting for your money with some popular whey proteins:

Name of Product	Percentage of  protein per serving	Product Price	Price per 20 grams of protein
Evox 100% Whey	72 %	R420	R3.88
USN 100% Whey	73%	R350	R4.79
SSN 100% Whey	75%	R359	R4.79
Muscle Works Superior Whey	74%	R349	R3.77
War Whey	80%	R349	R4.36
SPS isopro	84%	R269	R8.54
Muscle Science 100% Whey Supreme	73%	R485	R5.32
Cytosport Complete Whey	73%	R489	R5.95
Optimum Nutrition 100% Whey	75%	R699	R8.47

Keep in mind that this doesn't take into account the quality of the products ( such as amino acid profiles), however it is a decent indicator of which products are of a better value than others. The prices are  courtesy of www.supplementworld.co.za