Compare Amazon prices across the EU in 1 second
See the lowest price from 9 European Amazon markets directly on the product page you're already viewing.
Same product, wildly different prices
Did you know the price of the exact same product can differ by up to 40% depending on which Amazon market you buy from? Most people don't even know they can order from other EU countries.
Kosty shows you all prices automatically so you never have to manually check each country's Amazon. automatically so you never have to manually check each country's Amazon.
Example price: Sony WH-1000XM5
Everything you need for smarter Amazon shopping
Kosty does the price comparison for you, automatically and hassle-free.
Automatic currency conversion
All prices are automatically converted to your local currency so you can compare instantly without doing the math yourself.
Shipping costs included
We show the total price including shipping to your country. No hidden costs or surprises at checkout.
Delivery filtering
Filter out markets that can't deliver to your country, so you only see realistic options.
How it works
Three simple steps. No configuration needed.
Install the extension
Add Kosty to Chrome with one click. Completely free, no account needed.
Browse Amazon
Visit any product page on Amazon. Kosty activates automatically.
See the lowest price
A price comparison across all 9 EU markets appears instantly. Click to buy.
See Kosty in action
Here's what it looks like when you browse Amazon with Kosty installed.
Price comparison view on product page
Detail view with shipping costs
Popup with all markets