In my example, I am selling a surfboard, i want to sell wax with it. The wax is $5.00 and not worth it to ship as a standalone product. I want to be able to show the wax title, image, description, price and add to cart on my product page, but not have it link anywhere, I.e. - they can only buy it from the product page or I guess maybe the cart page if need be. I tried a few upsell plugins, but nothing that gave me alot of control.
My other thought was to use a new product page template and just remove the add-to-cart buttons / functionality, but wanted to see if there was a better way first.
So you could have a piece of code on your current product template if product price is higher than 5 then show add to cart - for example.
Then make sure you haven't got any of these product under $5.00 in a active collection.
Then obivously make sure these products under $5.00 are in the cross selling section.
Or maybe you could do bundles?