As hype for new box office champ “The Dark Knight” reached a fever pitch over the weekend, moviegoers were surfing eBay and Craigslist for tickets, sometimes paying five times face value for them.

The hottest items were tickets to Imax showings. The movie opened on 94 Imax screens, and company executives did a good job letting folks know that director Christopher Nolan shot many of the biggest action scenes with an Imax camera, making it was the best venue for viewing the film.

All the publicity didn’t hurt Imax stock, either: It gained 18 percent last week. “The Dark Knight,” meanwhile set a new weekend record by selling $155 million worth of tickets.

The going online-auction price for an Imax “Dark Knight” ticket seemed to be around $50 — with many sellers asking $60 and many buyers offering $40.

An eBay spokesperson said she didn’t recall seeing this many, if any, offers to buy and sell movie tickets on the site before. Read more