In reply to sweatmonster:
Norway *can* be expensive if you don't approach it properly. However, if you have your wits about you it needn't be too bad. Beer in a bar might well be £4-5 a pint, but if you buy it in supermarkets it's a similar price to the UK. Same with eating out. Cooking for yourself is the best bet.
As well as having lived there (twice), I've stayed in youth hostels on ice climbing trips. If you don't have their breakfasts (which often also include you taking the makings for a packed lunch) and get your own makings in, they can work out very cheap. The mountain huts are good, too.
Bus and train fares are reasonable, and the services punctual, clean and efficient. If there are 2 or more of you travelling together, you can often qualify for a "group" discount.