On one hand it makes sense to use a realtor to help you find property in another country. On the other hand, you could at least have a look at what’s out there on the market and get a sense of what things cost first. Have a look at penthouses for sale in Dubai here: https://atvir.com/uae/residential-complexes/penthouses . Then you can bring a realtor in to work through the ones that catch your eye and handle the actual purchase from there.