Found a cheaper way to buy in-game currency for Android games

I play a lot of PUBG Mobile, Genshin Impact, and Mobile Legends, and topping up through Google Play was starting to burn a hole in my wallet.

A friend told me about using trusted third-party top-up sites. I’ve been using one called ManaBuy recently - prices are usually 20–50% lower, and the delivery is instant. The first time I tried it, I literally got my diamonds before I even closed the payment window.

It’s been working well for me so far, but I’m wondering—anyone else here using these sites?

Which ones are worth trying?