Where can I buy Disney Channel Orginal movies?

I want some movies that are disney channel movies that I know are on vhs but not on dvd because they are old. Where can I find them? I have looked on Ebay and at walmart and they are not there. The main two movies are Tru Confessions and Flash. But I don't think Flash is a Diseny CHANNEL movie I just think it is a disney movie. Where can I find these?