I think a lot of the over inflated records are pricey due soley to either a lack of knowledge or more money than sense. Those about before the revival mid 90's knew you couldn't give Ace Spectrum away, christ it sold summat like 2 million in the states, it should be a two dollar record Same for the Constellations, Dottie and Millie etc, these were fillers in the 80's, in virtually every sales box every week
Bill Bush, another from the late 80's getting re-activated over the last few years, folk just don't study whats going off on the auctions etc and are prepared to pay whatever it takes, their choice admittedly but foolish IMO.
Don't think the likes of Ace Spectrum etc were deliberately pushed to inflate the prices, they are easy catchy dancers and you had a whole flock of lazy DJ's who weren't prepared to try something different as well as a less tolerable set of punters (all IMHO).