More and more prescription drugs are being added to the list of generic medicines that Wal-mart (and Sam's Club) and Target [.pdf] offer for only $4 each. Even if you have prescription drug coverage, these will often be cheaper than your co-pay, so put your insurance card away if the drug is on these lists. And, don't forget that Costco is generally cheaper than most other pharmacies for drugs not on the $4 lists. And, you don't need to be a member!
"resident shameless hussie"
I get the majority of my meds for $4 at Walmart. It has saved me a ton of money. Only two aren't covered of the 6 prescriptions I'm on. I'll have to check out the other places listed, I didn't know anybody but Walmart offered the discounted meds. Thanks!