Find it in scrap if you can, it will be fraction the cost and its not something seriously going to effect the car performance.
Or else buy original from discounted shops in BM road in shj. I buy from them for about 50% - 60% discounted rates than AGMC.
If copied as full image copying not thru xplorer burn disc, it shud work. But if there is any difference in US and GCC spec nav system then ur stuck mate.