SAN FRANCISCO - Next season, San Francisco Giants fans buying single-game tickets for an April game against Milwaukee might pay half as much as they would for a weekend game with the rival Los Angeles Dodgers later in the year.

The club is trying something new with ticket sales in a few tough-to-sell upper-deck outfield sections of its waterfront ballpark for 2009: cost based on demand.

The walk-up sales price for up to about 2,000 seats could even go up or down on game day.

The change would be minimal, somewhere between 25 cents and $2.

Team president Larry Baer calls it "dynamic pricing" and figures it might just become the way of the future for professional sports franchises.

Baer said, for example, fans might spend $25 to see the Giants host a team such as the Dodgers in August or perhaps even the always-popular Chicago Cubs in September, but might only charge $8 for the same seats in April when the Brewers come to the Bay Area.