The use case that jumps out at me is long tail items and whales. Let’s say that you’re a wine store, and you have an assortment of nice Italian wines all priced at $40 (to make it tidy). You’ve priced them competitively to attract your Chianti drinkers to step up and splurge if it’s a special occasion. A customer walks in, and the system recognizes that’s it’s Giovanni Vinoamore. Giovanni only comes in twice a year, but when he does, he leaves with two dozen bottles of Brunello and Barolo. It automatically raises the price of all those $40 bottles to $50. In the moment, you don’t care if a Chianti drinker puts a bottle of Barolo back, because you’ll make way more than that off of Giovanni. Once Giovanni leaves, the prices return to $40.