Yes, they do. In addition to the great monetary value, they also save time. You can purchase a Shimicoat epoxy resin kit safe in the knowledge that all you need to know is the area of the surface to be covered. As long as you have this data then you’ll receive the exact combination of each product to complete your installation.
This reduces the common issues of overs-ordering (and, therefore, wasted money) or under-ordering when calculating how much to purchase when you buy each product individually.