GLO Related Products, Upsell by Globo is a Shopify app that boosts average order value with flexible product recommendations and upsells. It offers features like “frequently bought together,” handpicked suggestions, and related items based on tags, vendor, or collection. Widgets can appear on product, collection, cart, search, home, checkout, or thank-you pages. It supports automatic discounts, multiple display styles (grid, line, Amazon-style), and recently viewed tracking. There’s a free plan with basic related product widgets, and a Pro plan ($9.90/month or ~$89/year) with full features. It supports English, French, German, and Japanese, and integrates well with most Shopify themes and Shopify Checkout & Customer Accounts.