I am by no chance saying that the sum is invalid, it is probably pretty damn accurate (from what I've heard elsewhere).
Just mentioning that it is not the minimum. Not even I am at the minimum because I have a /relatively/ expensive apartment. And I don't live on breadcrumbs or anything like that :)
EDIT: As the reply posted by OP saying
> NomadCost is based on short-term staying in a hostel, hotel or apartment in the center, working in a coworking space and having a basic meal three times a day.
(I am not really close to that actual lifestyle)