We just made a birthday party today for my 4 year old granddaughter at her gan. We bought a cake from Costco, 1/2 sheet, serving 48, for $16.99. People were making a comment that if I would have bought it from a place like Zomicks it would have run me $75. Just why are cakes so expensive at the local kosher bakeries or is the question why is it so cheap at Costco. The cake is fully customizable (white/chocolate cake, Vanilla Cheesecake/Chocolate mousse/Strawberry mousse filling, White buttercream/Chocolate buttercream/Cream cheese icing) and includes writing on the cake.