What other thing can you buy with such disparity of prices? I see a 34 - 1 ratio of high to low prices at the same store!
I take 20mg of Simvastatin (a cholesterol drug) every day.
I paid .20 a pill at my HMO
An Internet search reveals
.11 at Costco
.54 at Planetdrugsdirect.com
.61 APEX pharmacy (1.22 if you only get 30)
1.68 at ByLowDrugs (Australia and a few others)
For Zocor, the non-generic version:
$5.38 at Costco
.58 at NorthWest Pharmacy