The Milwaukee Brewers announced Monday that theywould test-market a demand-based pricing system for three gameslater this season. The Brewers are joining a growing listof professional sports franchises in adopting the system. Here'show it works: Using computer pricing software linked to the Brewers' existing ticket system, theteam will adjust the price of a game ticket in real time based onticket purchasing and a host of other factors, including theweather, team performance, the opponent, even the pitchingmatchups. Think of it this way: Would you rather see San Francisco Giantsstar pitcher Tim Lincecum on a Friday night or pay to see ajourneyman pitching for the Houston Astros on a Monday night? The Brewers are partnering with Qcue totest the pricing system. Qcue is working with at