We are planning 3 months (June, July and August 2017) in Scandinavia and the Baltic states (The Baltic Loop). North through Denmark, Norway and Sweden to Nordkapp, then south through Finland, after that, south-west through Estonia, Latvia, Lithuania and Poland, finally west through Germany and the low countries.
Our budget for two adults, two pre-school children and two dogs is £1,000 per week for everything.
The cost of food in Norway is terrifying. Basic groceries, such as fresh milk, appear to be
40% more expensive in Norway than the UK.
My wife suggested wild camping in Norway, which is easy, then going to a swimming pool for a shower - then I showed her the cost of indoor swimming!
One thing to note is that in northern Norway you are never much more than 50Km from Sweden where prices are much closer to those in the UK. The bad news is that there are often very high mountains between the two countries, making a short hop over the border for a pint of milk an unrealistic option.
This Scandinavian trip is part of a much longer farewell tour of the EU, which will take in 25 of the 28 EU member states (not Ireland, Cyprus or Malta), plus Norway and Switzerland.