Who will pay for the Realm?

I believe there should be an option that allows someone else to pay for your Realm without transferring ownership away from you, while charging the price applicable in the payer's own country. A friend of mine, out of kindness, has been paying for the Realm, even though he isn't in the best financial situation. I tried to insist on taking over the payments, but he wouldn't even listen. It would be great to have a feature for situations like this, where one person remains the owner of the Realm, but someone else covers the cost. Furthermore, the person paying should be charged the price specific to their own country, as some nations have lower pricing due to less favorable economic conditions.