Fair Indigo review for SellUp: Add ons & Cart Upsell

This app is very easy to use and configure. It's nice that you can customize several pieces of not only the look/feel but also the content - you can over-ride the default text to make a strong call to action other than just Product Name. We had a few quirky things in our theme that were not working quite right but Dan had them fixed in no time. Highly recommend!