Here's the Reddit

https://www.reddit.com/r/TravelHacks/comments/qpoq3x/is_arangrant_legit/

Has anyone used ARANGRANT to buy airlines tickets? For international business class seats they quote prices 20-25% lower than the actual airline website. I’m worried that there are hidden fees or some bait and switch stuff. If you have used them do you get a reference number for the ticket so you can see it on the airlines website? Thanks.