2 campsites in braithwaite bottom of whinlatter pass, one on way out of village, the other one carry on same road and cross straight over a66 down an old road its ont he left. Another one just out of braithwaite come down the pass into braithwaite take first left and stay on that road ita about 1.5 miles on a farm. Keswick there is a campsite by the lake or one just out of town at castle rigg, this is on the main road from keswick to ambleside just as you leave town you go up a big hill, round a left hand turn there is a small road on the right down there at the end on the left.
No idea on prices sorry, there is a caomping barn in newlands valley
http://www.lakelandcampingbarns.co.uk/barns/catbells £9.50 a night thats only a couple of miles from keswick