Answer: Some wine collectors decide not to sell their 20-year-old bottle of wine at the market price while refusing to buy another one at the same price.
Step-by-step explanation:
If the wine collectors do not want to sell at the market price, this usually means that they place a higher value on their wine than the market is offering for it. This is rational and might hold water if they know something the market does not.
It is irrational however if they are offered a similar wine at the marker price and they do not buy it. A rationally minded person would have purchased the wine at the market price so that they can now have two wines that are valued above the market thereby presenting a chance to make profit.