Yep.
I did a short period of time working for a wholesale florist between jobs about 40 years ago. That was my introduction to markup. We'd buy a case of carnations packaged in bundles of 50. We'd get 50 for $7 and sell them to the florists for $15. They'd take the 50 and break them in to two 1 dozen bundles and sell each for $15 and have 1 spare flower to boot.
So 7 = 15 = 30 + a couple bucks for the single.
Don't get me started about the price of roses around Valentine's day.... although the busiest day for flowers was mother's day.