Probability dictates the chances of winning a sweepstakes.
Perceived value
People enter contests and sweepstakes that they find interesting or challenging. Consumer do not enter every contest or sweepstakes they encounter.instead,they selectively choose.
A contest or sweepstakes' perceived value consists of two components: extrinsic value represents the actual attractiveness of the prize(a car versus a free sandwich). The greater the perceived extrinsic values are those associated with participating.