Do not be confused with the Weekly Shop, as it is in Tower of Doom, as the Weekly Shop is for banners, or titles.
Shop is a stage in Tower of Doom (TOD). When you arrive at a Shop, you may either spend Coins to purchase new and better cards, or you could spend 50 Coins multiple times to remove cards. You can get Coupons to -10% of the cost of all of the cards and to remove cards. You can also stack Coupons to get lower costs and better buys for cards or for remove cards.
Here are two examples down below!
- Purchasing a Card(s) - Without the Coupon: 110 Coins; With the Coupon: 99 Coins
- Removing a Card(s) - Without the Coupon: 50 Coins; With the Coupon: 45 Coins