That would explain the low price. I'm sure ADV doesn't have the resources to sell a partial season, bilingual set like FUNi does, but it's still disappointing that we'll get no dub.
But, as they said, it's an experiment to see how it sells, so we shouldn't assume that they'll do this for every new anime property they license.
EDIT: Oddly, Indian Summer gets a dub but these two don't. But then, it's easier and less costly to dub a three episode OAV as opposed to a 24/26 episode series...