The Nudge podcast covered irrational prices, noting they essentially act as a hook cementing your brand in people’s minds (Costco’s $1.50 hot dog, Ryanair’s charging for everything, Supreme’s drop strategy, etc).

The gem is the bit at the end about loyalty programs.

[Pret A Manger] staff have a certain number of items or dollar amount they have to give away every week.

Random rewards.

Slot machine psychology meets unexpected moments of delight meets empowered employees meets positive emotions all around.

An equation for sharing.

A super cost effective marketing campaign.