I wish I could dig deeper in AdMob/Google Ads/Google IAPs+subs/Apple/AppLovin, etc. business questions in the DM, but I cannot write you. Please write me if you are still interested in such conversation.
Sorry for the delay, concerning the import/export gold company in DMCC
You can contact them directly in their official website.
Once it’s done you open your bank account as per my experience it will be the most difficult part.
Then you can start looking for supplier:
• Gold from direct source you can get them from -3 to -5% of LBMA
• Diamonds directly from supplier based in Surat you can easily marge from 10% to 20% depending on where you sell.
I kind of have that being resident in the UK, but not domiciled there. I'm allowed not to declare any income that arises from outside the UK, so long as I don't bring it to the UK. So in that sense I am in a bit of a tax haven situation with non-UK sourced income.