That's also quite low. (When I did contractor work (PHP) in the Netherlands almost a decade ago I already charged 500 euro/day, and up to 80 euro/hour for certain gigs.)

And none of that really amounts to much if you subtract the taxes, overhead and most of all the time spent between gigs.

If you do well you can make out considerably better than on a salary, but still, 490 per day for a .NET engineer (biggest shortage there is in IT in Europe) contractor is on the low end.

Ok, but salaries are much lower than contractor rates, probably half.