Hello,
The problem with the prices of collection items is not a problem ! Collection items (a wonderful pair of HJ-Streifendienst boards or a "like-new" Elvis Presley 33 rpm disc) have only one price : the price you want to pay it. Could you pay a small fortune for a champagne cork ? Yes if you are a champagne cork collector !
I like the exemple (and I smile, and more, every time I told it) of this film director who has sold the rights to several of his films to buy a painting ... who is white (nothing on it, white). Is he stupid or am I stupid to not understand !?
Prices must be regulated to whatever is necessary for survival. Everything else, a Luxury Car, a diamant ring or even a kiss (joke !) has no more value than the value you want to give it.
On the other side, don't forget that the prices of the items you're speaking about are, in fact, the prices of the same objects in your own collections. So, don't be sad : the more the prices are high, the more you're rich. MHO
Best regards