For instance, when faced with a 60% off, 12 hour only coupon that reduces a $1,200 winter coat to $400, you can’t help but rush to the store to buy it, even if it is 95 degrees out. A few things are happening here. For one, the $1200 acts as an anchor price that psychologically forces you to realize you’re getting an enormous deal at the $400 price point. Plus, the promotion limiting the time the offer is available forces you into an impulse.