I bought a prepaid SIM card from a local provider in the UK. It worked wonderfully with the TP Link router and the costs were kept within reasonable limits. It would certainly also be an option in Georgia.

The TP Link works fine if you also have 4G with your mobile phone in the corresponding country. . . .
just, as already mentioned here - check the charges of 4G . . . Greetings

would work, but beware of roaming charges -> data access abroad!!.. for one-off queries abroad, your mobile phone will also work. the tp-link is intended for use with devices that do not have their own sim card.