The time period I speak of is within the scope of basically identical supply, other than, I guess, Draciel, Driger, and Gaia Dragoon MS, which do still have the NIB supply. I was discussing it with Deikailo, anyway.
Anyway, I was not discussing Y!JA directly, if that is the auction site you refer to, without middleman fees, the prices there are very reasonable anyway. I was referring to, mainly, prices here, though to be relevant, most prices on ebay are simply extortion, generally unknowingly so, but nonetheless.
I guess it is still technically a function of supply and demand, in that suppliers set a price most demanders are willing to pay (though, many are not), but that price is not really accurate to what it should be, based on the supply and the demand for these items.