I refilled a prescription yesterday, and it was seriously about 1/2 the cost of any other pharmacy I have ever been to. Normally my medication is about $90 for 90, then I pay 20% of that = $0.20 per pill. At Costco I got 100 pills for $13 which works out to $0.13 each. How is it so much cheaper? It's the same drug, same brand, same pills, same everything. I thought drug companies had some kind of fixed pricing scheme because every other pharmacy seems to charge the same amount.