Once they found I had insurance, they said I couldn't just buy it without using my insurance (probably a lie). Is it the pharmacy ripping me off and getting double paid, or is insurance getting a kickback on the copay? I think the first explanation is more likely.
Apparently, this is a common thing, but I found it to be puzzling.
Just another anecdote of how screwed up our medical system is here in the US. Imagine going to a store and paying higher than retail for an item...