We will have to agree to disagree on that point then.
Seems we will. But i can provide a splendid graph of prices on ebay since 2010 and i can ensure you it ends up for approx all units/armies. I don't try to explain the market and the "why". I just give you a general tendance. We could make a precise analysys if you find this fun. Some armies are going to be more and more expensive, while some others stay very acceptable prices (gob mortars, phenix guard...).
I don't know if it will continue like that. As David says, it depends if new commers arrive, for, yes, probably all of us are near their goals in a matter of figs. I too only miss few references.