The buyers know that the price of the items will decline.
If a team is successful their proud fans want to display their items to the public.
Rival fans will buy up some of the items knowing that they should go up in price.
The supply of these items is low and they will be expensive.
The demand for these items is high and they will be available for sale. The sale price could be expensive.
Time, money, and human capital
Money, raw materials, and investments
Time, money, and resources that are not readily available
None of the above