The Update Current Product Interaction in Replo has many applications, but perhaps the most powerful is its ability to create buy-box experiences where customers can choose from more than 100 variants. Due to Shopify's limit of 100 variants per product, you'll need to configure multiple products in Shopify and reference them correctly in Replo. However, with a bit of forethought, the customer experience can be seamless, avoiding unwieldy full-browser redirects to different products as seen with some stores.