It is worth knowing that you do not have to be a Costco member to buy drugs at the Costco pharmacy.

It is worth knowing that long ago the founder of Costco made a decision to sell the cheapest drug available at roughly a 5% markup as “a public service.”
This is a useful way to find the wholesale price of most drugs.

A couple of years ago Costco started a Medicare Part D plan,
but you should always ask the Costco employee “what would this drug cost if I paid cash instead instead of using my plan.”

Walmart decided to “one up” Costco’s policy by making some selected generic drugs “free” and later Target matched that Walmart policy.