From the article:
The domain name “avengersendgame.com” was purchased by a Deadpool fan who was willing to hand the site over to Marvel Studios in exchange for tickets to the premiere ofAvengers: Endgame. According to Twitter, that clever fan has had his demands met.
HOLY SHIT PICKLES!!! pic.twitter.com/qCCjRK9Eyj
— Guy Inchair (@AGuyInChair) April 2, 2019
Prior to the offer to hand over the name, the article mentioned the domain went viral last year when the owner redirected the domain to promote Deadpool 2.
Ryan Reynolds showed his appreciation and sent the fan a package from his Gin company.
— Guy Inchair (@AGuyInChair) December 14, 2018