DENVER -- They are the hottest tickets in town, and they are selling for a pretty penny.

Denver police found out just how expensive tickets to the National League Championship Series are when they conducted a sting operation Wednesday outside Coors Field.

"One (alleged) scalper that we have in custody purchased 60 tickets for $3,000 and was going to sell them for over $14,000 profit," said one undercover officer.

"As people were coming to the box office to get tickets, they were told the tickets were sold out," said Lt. Aaron Sanchez. "The suspect was sitting on Coors Field property calling out to people, 'Hey do you need tickets?'"

When the undercover officer asked to buy two tickets, he was told it would cost $600.

"These people are so greedy. Even when I offered him $540 for the tickets, he refused and wanted the $600," said the undercover officer.

So the officer paid $600. Police then arrested the seller, and confiscated all 58 tickets.

Police said they believe the seller was acting independently and was not part of a group operation.

"(The NLCS) is something the city's been waiting for a long time," the undercover officer said. "Everybody wants to take their kids and their family, and you've got people trying to capitalize on it, making five or six times the amount of money for a ticket they didn't do any work for."

Police said they'll be out all week long looking for scalpers. They said if the Rockies make it to the World Series, they'll be out then too.

One Rockies fan who tried to purchase tickets but couldn't said she's glad police are cracking down.

"There should be a limit on how many tickets people can buy," Esther said, declining to give her last name. She said it's unfair that scalpers have so many tickets and that many loyal fans can't get any.

So will the tickets police confiscated be put up for sale?

"Sorry, no," said police department spokesman Sonny Jackson. "They're evidence."

Jackson said it is illegal to resell any tickets on Coors Field property and it is illegal to resell tickets for more than face value anywhere else in the city and county of Denver.