MONTREAL—With big names like the Arcade Fire and Celine Dion taking to the stage at Metropolis on Monday night, some are looking to cash in on the charity concert.

While all the proceeds of the event are supposed to go to the family of Denis Blanchette, gunned down during Pauline Marois’ victory speech four weeks before Monday’s show, scalpers are re-selling the tickets online for a profit.

With general admission seats sold for $80 and balcony seats priced at $175, ticket are popping up on online retail sites Kijiji and eBay for much more. One man was selling a pair of balcony tickets for $700. Prices are only expected to rise over the weekend.

Many of the scalpers are asking buyers to meet them at the doors just before the concert on Monday to make the swap. Metropolis staff warn that it’s buyer beware, as they will be checking IDs and asking for a proof-of-purchase before entry.

While it’s common for scalpers to descend on concert venues, in this case they are taking advantage of a charity event.

The money from the show is slated to help Blanchette’s four-year-old daughter. The audio technician was killed on Sept. 4 as Richard Henry Bain entered the stage door at Metropolis and opened fire during a Parti Quebecois victory rally. Blanchette was killed immediately, another man was injured.

“This is just the kind of society we live in. People will try to make money off anything,” said performer Ian Kelly.

Some tickets are being re-sold at the regular rate.