Bensalem police say 43-year-old Susan Finkelstein was arrested on Tuesday.
Investigators say Finkelstein posted an ad on the Web site Craigslist in which she described herself as a "gorgeous, tall, buxom blonde diehard Phillies fan" in desperate need of tickets, according to CBS station KYW-TV in Philadelphia.
Police say her posting went on to say the price was negotiable and that "I'm the creative type! Maybe we can help each other!"
An undercover officer responded to the ad. Police say Finkelstein offered to perform various sex acts in exchange for World Series tickets.
She is charged with prostitution and related offenses. Her listed phone number was disconnected, and it couldn't immediately be determined if she had an attorney.