a. How would you expect the price of a used Toshiba player on eBay to change? Will the price change result from a change in demand, supply, or both, and in which directions?

b. How would you expect the price of a Blu-ray player to change?

Toshiba Corp. yesterday withdrew from the race to be the next-generation home movie format, leaving Sony Corp.’s Blu-ray technology the winner. The move could finally jump-start a high-definition home DVD market.