Many (article says 100) consultants with xK$ per day runs up 500M fast.
My model is basic, but at $1200/day per consultant, with 100 consultants, that's still about 4160 days, or about 11 years. Not what I would consider fast.
If they're doing anything beyond vanilla consulting work with SAP then I doubt they're using cheaper offshore talent. Or maybe they are and that's why this project has failed so spectacularly. (Note: I'm not saying all offshore talent is hot garbage, I'm saying the cheap talent is hot garbage, especially SAP consultants).