A flight metasearch compares fares; it does not sell tickets. Here is what happens between typing a route and holding a booking.
A metasearch is not an agency. Avia.ge holds no seats, takes no payment and issues no tickets; it asks every provider the same question at the same moment and lays the answers side by side. That is why the same itinerary can appear at several prices — each seller sets its own margin and its own baggage policy — and why the cheapest fare is not always the best one: a ticket bought directly from the airline is simpler to change than one bought through an agency that closes at six.
Fares are live for the search you run, not cached from yesterday, and they arrive over ten seconds or so as the providers answer; the list re-sorts as it fills. Prices are in Georgian lari (GEL), taxes included. Once you pick an offer, the provider’s page shows the fare rules, the baggage allowance and the total in their currency before you pay — read that page, because it is the contract, and Avia.ge is not part of it.