Average of the money person may spend for one month in Dresden ?

what is the average  of the money person may spend for one month in Dresden ? 

thnx in advance

Average income is around €2500/month.

income (einkommen):2500
what about the average of  (aus geben )

I think the average saving rate it 5% of income. Not sure any more about the exact number, maybe it was 6%, you can google it!