Quoted from Rarehero:
No, not really. So far there's only been one Vault Edition....it was a game that was out of production for a few years, Stern renewed the license & released a slightly altered version of the game. I suppose you could say ALL of MMr is a "Vault Edition"...cuz it was out of production for almost 20 years & is now in production slightly altered...but anyway - from this point forward, PPS has the Williams/MM rights - they can just keep making the game as long as there's demand. Once the standard editions are in production, they'll keep pumping them out till no one cares anymore.
thanks man. I love learning about this stuff. it does support my original point that as long as these are available new it's gonna be tough to get your investment back which is what wickerman made a point of.