The first time I tried GoodRX, Publix wouldn't take the coupon, but it turned out CVS had the product for less than the coupon price anyway. The second time CVS took the coupon at about half the going price, so GoodRX is on the happy list for now. One qualification is how this will play out with the annual insurance deductible. That will be a learning experience, but so far I'm okay with the fifty bucks.