Reminds of my friend's little kid noticing our road bikes: "Where's your kickstand?"
Not sure it'll really fit all bikes, either. But you COULD buy a bike for that amount that included the kickstand.
Weird, that is the exact same kickstand that I have on my beater. Guess somebody else out there has an early-90s clunker hanging around (or, if it's being parted out, a recently deceased clunker).
I can vouch though, it is one quality kickstand. You should totally get it.