Dealeasy: Volume Discounts App

I can't speak to its effectiveness in conversions/upsells, but I can tell you that their customer support is fantastic! I'm on the Horizon theme and needed some help in setting up the app in the cart drawer and on my product pages (again, because I'm on Horizon). Both Suki and Ruba were able to solve each issue in a matter of minutes. Great support!

[Update] Have had a few more occasions to work with support and continues to be amazing. Definitely feel this app is moving the needle in sales and AOV!