the first word i taught my daughter to read where sale and clearance and in the days before the fair credit act of 1965,(US) (pathetic isn't it that i know that?) when store could and did give discounts for cash, Macy's had a brass plaque at the front door, noting it gave 3% discount for cash. I remember having it pointed out to me, and read to me, and being made to read it back. it is the only thing i remember being taught to read.

needless to say, when i got around to doing cost accounting in college, i aced it. cost accounting was mother's milk to me!