If you were lucky enough to get your hands on Avengers: Endgame tickets, then you might want to keep them safe.

On Tuesday, tickets for the highly anticipated Marvel film were finally made available, and fans wasted no time in securing their tickets, braving enormous wait times and crashing websites along the way. After only an hour, the movie's ticket sales were already outpacing last year's Avengers: Infinity War sales.

Unfortunately, such an incredible demand means that some fans simply won't be able to get tickets for Thursday night's preview screenings. But it may not be too late... if you're willing to pay a whole lot of money.

RELATED: Avengers: Endgame Writers, Directors Justify Film's Massive Runtime

Mere hours after tickets for Avengers: Endgame tickets went on sale, resellers have already put up their tickets on eBay, demanding between $100 and as much as $500 to buy a single ticket. Others have opened bids, starting at $45 and $50.

This is clearly a sign that the demand for Endgame tickets is insane, but it will be up to fans to decide if they are willing to pay these prices to see the movie on its first day of release, or if they will simply opt to wait a few days to see it -- all while avoiding all of the film's massive spoilers.

RELATED: Avengers: Endgame Mini-Trailer's Three Most Important Moments

Directed by Anthony and Joe Russo, Avengers: Endgame stars Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Don Cheadle, Paul Rudd, Brie Larson, Karen Gillan, Danai Gurira, Benedict Wong, Jon Favreau and Bradley Cooper, with Gwyneth Paltrow and Josh Brolin. The film arrives April 26.