I have 8 SI 18’s. And the kits are nice if you have no tools, but saying the kits aren’t much more is a false statement. If you get hem half off with a ultimax bundle they are still more than double what a sheet cost. And if you buy single flatpacks and have them shipped I can literally buy 4 sheets and build 4 of them for the same price or less. However time and tools do cost up front.