Stores loose money on Boxing Day sales?

[Nano]

^ +1 Dry goods are alot easier to sell at cost or below as said, cause they mark up everything else anywhere from 10% or more to cover costs, Like brad said fish can be marked up as much as 300% I sold 1 1/2" Cichlid fry to a LFS once for 2.50 a piece and they sold them for 16.95 at the same size. but they have to do this to pay staff and power bills are enormous in Fish stores