Rare baseball cards may also be purchased at major baseball card shows. These events are held periodically in different cities, allowing baseball card collectors and dealers to meet. The rare baseball cards do not have a specific price and they are worth what other collectors are willing to pay for, and in order to establish a price the collector takes into consideration the condition(or graded condition) of the card. Rookie cards, first cards of specific players, are the most valuable ones. The price of rare cards depends on the market demand as well. If there are many collectors who are looking to get a specific rare card, the one who gets it is the one who pays more for it regardless of its predetermined value.