Two unbeaten teams plus two future Hall of Fame quarterbacks plus one well-respected owner equals a pretty penny to be inside Sports Authority Field on Sunday night.

Broncos tickets already are among the toughest to get in the NFL. Prices on the secondary market for Denver’s sold-out game against Green Bay are in the $400 to $700 range for the upper deck and more than $3,300 for the lower level.

The storied Packers are in town for a nationally televised matchup featuring two 6-0 teams with two marquee quarterbacks — Peyton Manning and Aaron Rodgers, who have faced each other just once.

Broncos owner Pat Bowlen’s induction into the team’s Ring of Fame as part of the night’s festivities is fueling interest locally, and pursuit of tickets by out-of-town Packers fans, known to be among the league’s most rabid travelers, has resale prices reaching a plateau previously unseen for a Broncos regular-season home game.

Oh, yeah, and players from the 1997 Broncos team that won the organization’s first Super Bowl (beating the Packers) will be on hand.

“I think it’s a combination of everything,” said former place-kicker David Tread well, who is a past president of the Broncos Alumni Association. “Broncos fans are still very loyal to the ’97 Super Bowl team. … Mr. B is going into the Ring of Fame. It all adds up to a pricey ticket. I think it’s great.”

Treadwell, who was with the club from 1989 to 1992, said “it’s going to be a fairly good showing” of past Broncos.

Wednesday, asking prices for some lower-level tickets were $3,300 per seat on Ticketmaster, the NFL’s ticket exchange site, although most were priced between $1,000 and $2,000. Tickets upstairs in the rarefied air of the fifth level were starting at $360 and topping off at $800.

Face-value lower-bowl tickets for this season are priced at $180, and upper end-zone seats have a face-value price of $50.

During the 2014 season, resale of those seats on the secondary market was running from $128 to $379, according to the Broncos and the NFL Ticket Exchange.

“It’s a very high-end game, no doubt,” said Gary Adler, executive director and general counsel of the National Association of Ticket Brokers.

The prices for secondary-market tickets for Sunday’s game are way above those for some typical regular-season games and are more in line with resale playoff prices. They are not, however, on the level of a secondary Super Bowl ticket.

“I would not compare it to a Super Bowl because the face value is so different,” Adler said. “It’s like comparing apples and oranges.”

Face-value tickets for a Super Bowl run between $800 on the lower end and up to $1,900 for prime seats. The secondary market takes off from there.

Still, the leap in the value of Sunday night’s game from face to secondary is impressive, Adler said.

Fans looking to score tickets to the game at Sports Authority Field should be cautious. Big games and big prices attract scammers, criminals who are looking to make money selling bogus tickets and burning fans.

Adler said National Association of Ticket Brokers members offer consumer protections in the secondary ticket market. The Broncos issued a statement this week warning fans to be wary of counterfeit tickets that can make their way through secondary markets.

“We want fans to be fully aware of the risks involved with buying tickets in the secondary market while remaining assured that tickets purchased through the ticket office, Ticketmaster or NFL Ticket Exchange are 100 percent authentic,” Broncos senior vice president of business development Mac Freeman said.

While tickets purchased online can demand a price exceeding face value, it’s illegal to sell tickets above face value in Denver city limits, which includes outside the stadium.

“Officers will be conducting plainclothes patrols around Sports Authority Field working to identify people attempting to illegally sell game tickets above the face-value price,” said Doug Schepman, a Denver Police Department spokesman. “The focus and resources dedicated to this Sunday’s operation are consistent with the approach for every home game.”

Kieran Nicholson: 303-954-1822, knicholson@denverpost.com or @kierannicholson