@LiberalLibrarian I seem to recall that, in some version of the show, Daphne comes from money. I think there's also some speculation that Shaggy may have a rich family. Doesn't he inherit a plantation at some point?

@LiberalLibrarian I'm guessing illicit drug sales, from the look of that van.

Or they all lived in Shaggy's Mom's basement, and ate her food.