How Arbitrica works
Arbitrica is your personal AI agent. When you are about to pay or paid already, it searches your product from 195 countries, finds the lowest rate on Earth and gets it for you at that price.
The short version
Arbitrica is your personal AI agent for buying things at the lowest price on Earth. It lives in your browser and shows up at the checkout when you are about to pay. It reads the price you have been given, searches the same hotel, product or tickets from 195 countries using the geo-arbitrage phenomenon, and finds the lowest price that exists for it, no matter who sells it. Then it buys it for you at that price.
Why the same thing has more than one price
Most things you buy online have dozens of prices that exist at the same time. The one you are shown depends on which country you search from and which site you happen to be on. Not just that: dynamic pricing and pricing algorithms keep moving prices with demand, timing and many other signals.
Different countries also get access to different inventory, sales channels, local rates and promotions, so searching the same hotel, product or tickets from another country can open up a lower price that you cannot get from your own country. Prices also move over time: a hotel, a flight or a pair of concert tickets can cost less next week than today. Arbitrica works on both differences.
- Mechanism 1
Geographic arbitrage
The same item, searched from 195 countries, to find the lowest price on Earth.
- Mechanism 2
Time arbitrage
The same search repeated at different points in time: at checkout (live arbitrage) and after you pay (multiple-time arbitrage).
Doing the country search by hand means a VPN and one country at a time. Doing that successfully for 195 countries is humanly impossible. Arbitrica does it for you. Read more in what geographic price arbitrage is and time arbitrage explained.
What happens at checkout, step by step
You shop the way you always do
Pick a hotel on Booking, a product on Amazon or seats on a ticket site and go to the checkout.
Your agent shows up
A chat opens next to the page: “Hello, your agent here. My job is to give you world’s lowest price for anything.” You can also open this chat yourself by clicking on the Arbitrica logo on the right edge of the page.
It reads your price and confirms what you are buying
For a hotel that is the hotel name, dates, guests, room type, cancellation terms and breakfast. For a product it is the exact item. For tickets it is the event, section, row and number of tickets. This is what stops a cheaper but different item from slipping in.
It searches from 195 countries
You see the search run on a world map while the agent works. You can carry on with other things in the meantime.
It validates the result
The agent checks that the lower price is for exactly the same hotel, product or tickets, that it includes all taxes and fees (and delivery, for products), and that the price will not suddenly change when you pay.
It shows you what it found
“The price they gave you”, what the agent makes you, and “The world’s lowest price”, with the country it was found in and the kind of provider selling it.
It buys it for you
For hotels, Amazon purchases, events tickets, the agents prepare everything in a new tab, so you only review and complete the payment.
Real examples
| What was being bought | Price they were given | World’s lowest price | Found in | Arbitrica made them |
|---|---|---|---|---|
| Hôtel Pont Royal Paris2 nights, 25-27 December 2026, 2 guests | $1,034.62 | Mexico, from a Google-approved provider | $297.78 (22%) | |
| Samsung Q-Series Soundbaron Amazon | $747.99 | United States, from a verified provider | $250 (25%) | |
| 2 tickets, Harry Styles & Jamie xxMadison Square Garden, Section 116, Row 20 | $1,070.00 | United States, from a verified provider | $230 (18%) |
After you pay: multiple-time arbitrage
Many purchases can still be cancelled or returned for a while: hotels with free cancellation, flights, car rentals, some event tickets, pre-orders and delayed-shipment orders, and subscriptions. Inside that window a lower price found later is still money you can have.
- The agent detects that you paid for a product
- The search repeats from 195 countries until the window ends
- The new booking is confirmed at the lower price
- Only then is the original cancelled
The mechanism Arbitrica developed repeats the search from 195 countries at many points in time after the purchase, until the cancellation or return window ends. When it finds the identical item for less, with all taxes and fees included, it prepares a new booking or purchase at the lower price. The new booking is confirmed first, and only then is the original cancelled. See hotel price drops after booking for how this plays out on hotels.
Where Arbitrica lives
Arbitrica is a personal AI agent, not a price list or a comparison site. It lives in your browser, stays out of the way while you browse, and only steps in at the moment it can earn you money.
It reads checkout pages only to find you a lower price and does not sell personal data. See the privacy policy and the FAQ for more.