Glad it works for you. I noticed you mentioned medicines above. Had to chuckle a little. I recall watching one of Clark Howard's financial updates (this was back when he had his own financial advice show on TV, some years ago).
Anyway, he had gone to a Costco and was showing how they capitalize on impulse buying -- usually by putting these large quantities of items in a "package". One item "package" was a TEN-pack of Advil?! Good lord, I wouldn't even go through one small bottle in a year.
So that's just one example, but I never forgot that one!