After taxes paid, it is a pretty "average" contract payment wise (in fact pretty lousy compared to what has been coming up this last 2/3 mths ) in quite an expensive part of Europe, hence why positions have been constantly advertised/available for around +/- 5mths now.
& why they are using a substandard agency that was previously only a NAS bottom feeder.
OP doesn't really have much of an idea what constitutes being paid "really well" IMHO.