Subscription commerce emerged as an up-and-coming phenomenon in retailing that enables shoppers to automatically receive recurring deliveries of consumer goods. One important dimension along which subscription services differ is the degree to which the content of each delivery is surprising....

We study a newly released data set of scanner prices for food products in a large Swiss online supermarket. We find that average prices change about every two months, but when we exclude temporary sales, prices are extremely sticky, changing on average once every three years. Non-sale price...