At the shop, you'll be able to purchase packs and gold bars. Furthermore, you'll be able to obtain the subscription to the game.
Packs contain different items, such as lives, powerups and gold bars.
But you can choose to only get gold bars. There are many different offers depending on the amount you wish to acquire.
If you purchase the subscription, either for a month, 3 months, or a year, you'll get a pack with infinite lives, pack discounts and the ad-free version. Keep in mind that you will be able to try it for free for 7 days.