Dios, you're not really gonna find them sealed. If you do, most people are gonna want a mint for them.
About the only Disney movie I really want is The Lion King. My partner accidently sold it when we needed money for bills because we were strapped as all hell. He wishes he hadn't done it now.
I'm just happy as all hell that I finally got my favorite one back in March, Lady and the Tramp. That was my favorite as a kid. I just need to get Lady and the Tamp II sometime.
And by the way, most are total BS when they say its the first time they've been on DVD. Because about 10 or so were released in a boxset in limted numbers back in '99 or '00. Though, they were just the movie, albet bad transfers. That boxset is worth some serious money if I recall