OneCart is a universal shopping cart. You can add any products from any online markets to your cart and keep them in one place.
Right after you installed OneCart to your browser - just start online shopping everywhere.
Once you found some product you want to keep - just add it to your cart in one click and continue shopping.
With OneCart you don't need to navigate to online store to check actual prices of your favorite products anymore.
OneCart doing it automatically for you. Just open your cart and see actual prices of each products in your cart.