The WAC ( acquisition cost ) to the wholesaler is roughly $143 a month isn't it .......so the $50 extra you were charged ( after using the coupon ...your net cost was $193 ) ...is some how split between Costco / GoodRx /AMRN ? The $50 you paid over WAC was probably split between CostCo and GoodRx ...if both were involved . The good part is that AMRN made a " wholesale " sale because without that coupon reducing your cost above WAC to only $50 ...you may not have bt Vascepa .
Theres a whole field of economics on price/ demand flexibility curves that the 3 players ( Costco / GoodRx/ AMRN are involved in here .
Re V card and insurance getting you to $9 a month If the WAC is around $143 a month ....to get you to $9 a month AMRN is definitely rebating ( purchase discount ) some $ to you to get your purchase ...unless you have one outrageously good ( Federal employee ? ) insurance plan.
If the WAC for Kaiser .....my Medicare plan ...is $143 a month and Kaiser only charges me $12 a month ( since June ) then Kaiser must want to keep me out of their ER really badly ...or AMRN has given them a huge rebate on their normal WAC ...or a combination of both