incomes are a bit higher than you assume, myself and my wife works as engineers, and around 40-45 000NOK monthly are normal i think.
I coffe can be around 25-30 NOK ( USD 3,80 1l of lmilk around 13 NOK ( USD 2 ) but cigarettes and alcohol are pretty steep.
Expect USD 15 for 20 cigarettes, USD 4,5 for 1/2 litre of beer at a grocery store, and around USD 2 for 1 litre of petrol :bike_rider:
Still we have good sosial security system, good schooles and fresh air / lovly nature are for free. At least for now.......