Hasselblad prices have barely changed and if anything have gone down a smidge from what I'm observing. On eBay, Marc Miller's prices have pretty much been consistent for at least 4 years.
Maybe the influx of teenagers buying cameras means once they get bored, they're selling them on again for extortionate amounts for their remorse. I think mostly people just take liberties when selling classic cameras.
I'm really not sure what people are talking about in regard to increased prices in general.