 The fourth psychological hack is the sensory appeal. They have certain strategy that you can employ very differently in order for you to encourage your customers to buy more. For instance, with Costco, they often position their tasting sampling stations right at the end of the aisle. Why is that the case? It is to encourage you to buy more as you push your cart down the aisle. This could very well mean an extra bag of dumplings, an extra bag of cheese, and an extra bag of your favorite nachos. Big brands are able to utilize these sensory appeal very, very strategically.