I just heard from Robin yesterday by email, so that's heartening.
My impression is that 19.5 is a small company and their internal expansion is overwhelming them. I haven't jumped ship yet, though, and not having lost any sales yet, I do think the price is right. (I've checked around and they're still the best deal.)
They really do need to make it easier to upgrade, though. Why can't they simply add a few more order buttons that add on GB's of storage, seeing as how they have fixed rates?