When I used to work retail, my store would use the last cent digit as a code. normal prices were 5 (ex 9.95), advertised sale prices were 3 (9.93) and markdown to match competitor prices were 7 (9.97)
I never really found out *why* they felt they needed the code, since everything was computerized anyway and the prices would change automatically. Of course, I also didn't really *care* about their pricing schemes
