A sticker pack "whale" might be down $50, these games might crave a hundred to a thousand times that. Also while kids make the headlines, grown ups are a far bigger market. Simply banning loot boxes for kids is to ignore the majority of the problem.
A sticker pack whale will spend hundreds of Euros. If you only wanna spend 50 bucks better get another hobby tbh.
Just to be clear, sticker collection economy is also shady, it just doesn't have a societal impact remotely like that of loot boxes.
This is a good price. I've been paying CHF 1.20 for 5 stickers at the local corner store.