[Jonah 99]

Market values are determined by supply and demand.

if a new supply is found this will eventually drive the price down.
A seller is not obligated to disclose the amount of their supply.

When the item keeps coming up for sale the buyers will get a new sense of their availability (increased supply) and if they have fulfilled their purchases demand will be decreased, and yes this will affect the price.

Creating an aire of scaricity to infuence market prices is nothing new, it happens every time a new game system comes out on the market.