I had been getting a 30 day supply of a certain med from Costco for several months. Then I decided to call Elixir insurance to ask them about pricing from Costco and Elixir mail order. Someone told me that the price would be the same $18.36 whether for a 30 or 90 day supply from either place (except Elixir only works with 90 day supply). So I decided to get the med from Elixir. Big mistake! I received it with an invoice of $422! I have spent hours and hours on the phone with both the pharmacy and mail order trying to get this corrected. They claim that they told me the price of it and that I gave them the okay to send it out. I don't think anyone would have given permission to be charged $422 if they could pay only (a total of) $66 from someplace else!