You had to be quick off the mark to get tickets, which sold out within 6 minutes.
Ariana Grande will play the special concert at Emirates Old Trafford as well as Coldplay, Katy Perry, Black Eyed Peas, Take That, Justin Bieber, Pharrell Williams, Usher, Niall Horan from One Direction, Little Mix and Robbie Williams.
Some fans shared their frustration at the website crashing as thousands of music lovers attempted to snap up the tickets.
The listing was taken down shortly after being seen by the Press Association.
Following the deadly terror attack at her Manchester concert last month that left 22 people dead and 59 people injured, Ariana Grande vowed to return to the area and perform for her fans.
"Sadly, over 10,000 unscrupulous applications have been made", said Ticketmaster.
Ariana Grande announced the charity show after her performance in the city came to a horrifying end when a suicide bomber struck in the foyer of the arena, killing 22 people.
Some tickets for the benefit concert have appeared on eBay - but the company has told the BBC it is attempting to remove listings as soon as they appear. All tickets for this event will most certainly be removed by the team who are doing manual sweeps to pick up any that slip through.
The show will also be broadcast on BBC Television, and on BBC Radio and Capital Radio Networks.
The show will be played out live on Key 103 on Sunday for all those who didn't get a ticket.