Harry Potter: Hogwarts Mystery Adds Expensive Pets

The notorious free-to-play mobile game Harry Potter: Hogwarts Mystery announced it will be adding optional pets — however, they come at a cost.
To obtain the pets, players will need to spend Gems, Hogwarts Mystery's premium currency. Each pet will cost between 160 and 320 Gems, which can generally be purchased in packs of 130 for $4.99. Though gems are obtainable through playing as well, it's a slow process.
The pets included are a toad, cat, owl, and rat. Each will generate some Ener