We do rarely. Two reasons: One, because we watch Harry Potter enough and it wasn't worth buying the set on demand, and Two, I usually cannot keep track of which

We do rarely. Two reasons: One, because we watch Harry Potter enough and it wasn't worth buying the set on demand, and Two, I usually cannot keep track of which service we bought a particular movie on. I also have a Roku and a large USB thumb drive, so if I have time, I rip a movie onto the thumbdrive, thus, creating our own little on-demand service.