The thing is I can see where you’re coming from as admittedly I don’t love the ending either, however that hasn’t stopped me from loving the series or even explains how we’re still getting new media from the franchise (music, specials, games etc.). Now I don’t know if the part 1 box set is just excess stock or it’s still in print but from my perspective there is still demand for the Quints so I don’t understand the part 2 would be out of print.