How it works: 1. Users see a welcome bar telling them about a promotion when they first enter your store (e.g. buy 2, get 1 free, spend $100 and receive a free gift or spend $100 and get free shipping) 2. They add some products to the cart, and the information on the bar changes, telling them what else needs to be added to the cart to get the reward. 3. They add enough products (or the required ones) and see the final message saying they now qualify to receive the bonus/free shipping.