Norway is indeed an expensive country, both to live in and travel through. However the norwegian currency is quite low and have been so for 3-4 years compared to major currencies such as Euro, USD, BP etc so I belive it is a relatively conveniant time to travel in nowadays, as long as the currency landscape dont changes too much.

I do support your idea of doing a thorough research about the costs of travelling in Norway. Especially alcohol and cigarettes are very expensive compared to other countries. But then again - I cannot see that cigarettes and alcohol is a major part of expenses travelling on a motorbike. But I might be wrong of course... And to assert that Norway makes Switserland look cheap in comparison is a huge exaggeration. Take a look here please and you can see for youself: https://www.numbeo.com/cost-of-livin...by_country.jsp
Actually costs of living is ~ 16 % higher in Switserland compared to Norway. And the last time I rode through Finland fuel was more expensive there. Might not ne correct now though...

But Norway is expensive, no doubt about that. What you can do to keep your costs down:
1. Wild camp - yes in Norway that is not only allowed, its a right everybody have. There are restrictions of course, at least 150 meters away from nearest house, not on farmland, maximum 2 days in a row at the same spot etc.
Use Airbnb - as in most other places and countries using an Airbnb accomodation is much cheaper than a hotel or similar type of accomodation. Especially in Norway I would say as costs of running a hotel, paying staff etc are high.
Restrict from eating in restaurants, prices are high. Prepare your own food, make sandwiches for lunch etc. If you eat in a restaurant, coffeeshop, fast food joint - many places have an offer called “dagens middag” or similar which translates to “dinner of the day” which is often the more economical meal.

Speed limits are low, often 80 km/h, sometimes 50-60 km/h in build up areas so your bike wont use an exessive amount of fuel - if that can be of any comfort...

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In the end everything will be fine. If its not fine its not the end....