Let's not exclude the possibility that this guy is not trying to be dishonest and fool anyone. He could just be a bozo who selected images from the internet that looked kind of/sort of look like his drums out of lack of a camera, laziness, or just pure stupidity. Since none of the three drum images match each other and he's provided such a sketchy indication of what's included, who knows what he's selling. Maybe he owns, and is actually selling, everything pictured and is inarticulate and is mistakenly referring it it as a single kit. Nothing about sizes, condition etc. If this guy is running a scam though, it's not a particularly well thought out one.