Those would be pretty unique examples, in the main most VHS collections aren't worth much (if anything) at all (though, if anyone wants to offer me a few thousand for my old Chinatown Video collection on VHS, I'm prepared to negotiate 
).
In general, cult classics that had limited runs, or have become rare but still highly sought (due to otherwise being unaccessible) is where the half-decent money is on a more consistent basis (and that usually holds true of all formats, no matter how old they are), as evidenced by the list of VHS tapes in sold / completed listings, sorted by highest price -you can see, for example, Nightmare on Elm Street collections and scores of other B, C and D-grade horror films yield ok money fairly consistently, Mulan etc.... does not (highest price acheived for a single Disney VHS tape is somewhere between $89 and $99 (can't be determined because it was sold as a best offer, original list price was $99, and just below that is a copy of Alice in Wonderland that sold for $89).
Horror is particularly suited to this type of trend as a lot of the low budget stuff wasn't exactly easy to get the first time around, and of the group that want them, there aren't any alternatives like streaming or more recent format editions. Plus, the scanlines and other quirks of VHS tapes kinda match and potentially enhance the genre nicely, the same is unlikely to be said for movies being purchased on the basis of pure nostalgia, which I suspect for Disney on VHS would wear off fast as those quirks would quickly become annoyances (I tried to watch one of my VHS tapes a few years back, couldn't get through a few minutes the quality was so bad, lol).
