In reply to gcandlin:
A few things I remember from my last trip there a few years back. Can't remember exact prices, so there will be a bit of vagueness
As HeMa said there are some free camp sites, but I don't remember the pay ones being massively expensive.
Food isn't too bad so long as you stick to fairly basic stuff and stay off the booze. If you like fish then you can live very cheaply
If you hire a car it is worth topping it up whenever you see a petrol station, as they tend to be spread out in Scandinavia.
One thing we did which was a lot of fun was to persuade the operators of one of the pleasure boats operating out of Svolvaer to drop us off at the end of Troll fjord for a few days. There is an impressively remote hut just below Isvasstinden that is worth a visit.
http://www.spectral3d.co.uk/Personal/pics/2006/norway_august_2006/Page1.htm... shows that area.
Finally, the Geiter is well worth a visit, but it is the only place in norway where I have ever had to queue for a route.