I have had a look over the app store, and a full list of these apps can be found here. Some specific apps I feel may work for you are:
1. Upsell Recommendations ‑ Freeby Innonic - This app is 100% free of charge. It offer 3 types of widget placements: Homepage, Product Page, and Cart Page widgets, 3 recommendation algorithms: best sellers, category best sellers, intelligent product recommendations (including popular items, most expensive products, you may also like these items, products recommended for you). Customizable design: style the upsell widget to look like part of your store. Customizable position: you can decide where you place the upsell widgets on your page.
2. In Cart Upsell & Cross Sellby In Cart Upsell - This app is currently offering a free 60 day trial, and after this the cost varies on which plan you choose. Features include: Cross-sell particular products to every customer, Multiple related products, Offer discounted / free / BOGO, Show or hide up-sells based on a customer's tags, Show cross-sells for certain countries.
Having this in place before BFCM is a really good idea, what else do you have planned? With the right planning and execution it could be your store's most profitable week! How do you feel things are going at the minute? Is there anything you'd like to improve or change?
Ivy | Social Care @ Shopify -Was my reply helpful? Click Like to let me know! - Was your question answered? Mark it as an Accepted Solution - To learn more visit the Shopify Help Center or the Shopify Blog