You do not need a membership to use Costco's pharmacy.
I recommend calling first to confirm insurance acceptance and making an appointment online to avoid waiting.
The prices are much better, and they actually have the medication in stock.
I have been using it now for 3 months and it saves me so much research. Reduces the need to call and double check every time.
How did I not know these places existed?! Atly's scoring is a lifesaver, now I can finally find THE spot without wasting time Googling my life away.