Gave my husband a lesson in economics.
He went to the grocery store and I told him I needed Motrin, but only the Extra Strength.
He told me the Extra Strength usually cost more and shouldn't he rather get the lower dose?
So I explained carefully that if he bought the lower dosage and I'd have to take four pills instead of the two Extra Strength I normally need, I'd finish twice as fast and then replacing that bottle would cost a lot more than just having the Extra Strengths to begin with.
I thought he understood but then he came home with four travel packs of Motrin each containing two low dose pills. Each travel pack cost a whopping 75 cents! He spent three dollars on what is essentially to me two doses, or about eight hours of toothache relief.
He said the store was all out of bottles and this was the only thing they had left.
When I lost my head about spending three dollars on two doses of Motrin when an entire bottle of 250 pills cost about $5, he calmly replied that if he'd come home without anything and saved the money he'd be up all night hearing me kvetch about my toothache.
So, he concluded, he didn't actually spend the $3 on meds for me. He spent three dollars on a guaranteed good night's sleep.