Bold Upsell, a highly rated Shopify app, lives up to its reputation with a quick and easy setup process, typically taking under ten minutes. The app offers a user-friendly interface, and its demo store provides a clear understanding of its functionality. Bold Upsell enables the creation of upsell funnels, showcasing pop-up offers to customers before and during checkout. When activated, a pop-up replaces the original product with the upsell product upon customer acceptance. In summary, Bold Upsell lets you set up multiple offers and display additional upsell items to customers after the initial offer, with the app respecting customer preferences and not spamming if they decline multiple times.