I thought that it was 18.99. I was looking at them the other day.
LAST TIME I BOUGHT A 1/2 SHEET @COSTCO I BELIEVE IT WAS 16.99 OR 17.99.
You'll have to call Costco find out or go down and ask that's the best way to do that I don't know cuz they change the price so I don't know
Thanks! Your answer is awaiting moderation.