Maybe it's not the thing you are looking for, after I read your question carefully, but just wanted to mention that I do the same for customers depending on the

Maybe it's not the thing you are looking for, after I read your question carefully, but just wanted to mention that I do the same for customers depending on their country with Purchasing Power Parity to adjust prices. [0] [0] https://github.com/rwieruch/purchasing-power-parity https://github.com/rwieruch/purchasing-power-parity