Give me 100 rubles, and I’ll make you a king!

There's nothing wrong with that. Let them buy whatever they want and have an advantage. What's the point? You'll be a cool player, beat someone up. Then a group will come, find you, and give you a good beating. These are primarily collective games. A person won't gain any significant advantage. And you can get decent gear without spending money. And you can even make good money by selling them in-game currency. Everyone is happy. So what's the problem?)))