Upsell and cross-sell on the item, assortment, truck, and thank you pages. Product packs or extras: Upsell item packages and cross-sell item additional items to replace things in the truck. Be sure to include unique SKUs in your requests. Use our Setup instrument to select the upsell area and apply a programmed markdown at checkout. Duplicate and glue the manual piece into any item depiction, page, post, or topic.