Minecraft Shop System with Ingame Coins?

Somebody knows a Minecraft Shop system by paying with Ingame Coins. The system should run on a website? Or maybe there's a trick where you can pay in Buycraft or tebex only with ingame coins. The whole thing should be for bungee cord.

Well. Buycraft, but buy ingame coins?

I would actually run real money trading, but since I'm no 18 and I can't register a small business that will be nothing: / Therefore, the demand.

For a website you also need a privacy policy and a legal notice. But you have to be 18+

We already have the imprint

As long as you have not copied that from somewhere…