Amazon App
https://apps.shopify.com/amazon-by-cedcommerce?search_id=39e4bd63-1c36-4169-a059-e0944b1e99ca&surface_detail=amazon+app&surface_inter_position=1&surface_intra_position=4&surface_type=search
Upsell App: https://apps.shopify.com/orcinus-product-recommendation?search_id=dbec5c07-dbb0-4757-ab93-f1561cbaad13&surface_detail=upsell+recommendations&surface_inter_position=1&surface_intra_position=6&surface_type=search
Upseel App 2: https://apps.shopify.com/recommended-products-wiser?search_id=903fddaa-9f72-4d20-91be-e090c7a09916&surface_detail=upsell+recommendations&surface_inter_position=1&surface_intra_position=4&surface_type=search