We sell a lot of large digital packages of images that are not buy-alls. For those, we suggest people favorite images and use the favorites to populate their packages. My old cart had an option on the end user side that they could click to populate the currently selected products with your selected favorites. That would save a lot of hassle for IBY users and to everyone's gain (user saved time; photog and S+ get better sales bc fewer abandoned carts) for like a 50-image photo book product. Since you can have multiple items in cart that need multiple images, taking advantage of IBY's ability to organize images into folders on client side can be used to advantage here as the favorites folders could be made for the products. It may seem a false click economy: why not just add images to cart item instead? Answer is that you'll probably make more favorites than cart slots and need to whittle it down from there. Allocating favorites to folders is easy enough, but once there one click transfer to cart saves the additional clicking.