I had a lesson in economics recently, illustrated by a simple package of disposable razors.
The package on the left contains 8 Target brand triple blade razors. It cost about $5. The package on the right contains 8 Schick XTREME3 ComfortPlus razors and cost about $10. I’ve been using the Schick razors for the past year, and decided save a few bucks by trying the store-brand razors.