Hi – yes sorry, I had forgotten that add-ons are not native to WooCommerce, but it is a plugin. I’m using the standard WooCommerce plugin called “Product Add-Ons” – which allows the user to choose a free or paid add-on to a product – https://woocommerce.com/products/product-add-ons/. The add-on products cannot be purchased separately. So, if a user adds a mattress (cost: $500), then clicks the checkbox to add a Bed Frame (cost: $75), the cart processes the two products (mattress and bed frame), but shows a cost of $500, not $575. Is there any way to have the $75 included in the cost?