2. Multiple purchase pricing
My go-to grocery store loves to run a 10-for-$10 promotion. Not only are the sale items a mere dollar each, you also get the 11th item free. There are often at least a dozen products included in the sale, and you can mix and match items! How cool is that?
It’s awesomely cool for the grocery store when we load up on 11 items we don’t need. It’s even better when those items regularly sell for $1.09 anyway.
I’m not saying multiple purchase pricing is always bad. It’s just that when we see four-for-$5 sales, we tend to buy four items even if we only need one.