SellUp: Add ons & Cart Upsell

Reviews Summary

The reviews for this Shopify App are quite mixed, with a combination of positive and negative feedback. Positive aspects highlighted by users include easy setup, quick and helpful customer support, increased sales through upselling, and customizable features. Users appreciate the app's effectiveness in adding add-on products and improving average order value. The support team, especially Dan, is praised for being responsive, knowledgeable, and quick to resolve issues. However, some users expressed concerns about transparency in billing, issues with upsell orders, and difficulties in using the app with certain themes. There were also complaints about overcharging and lack of functionality like bulk offer options and discounts.