not much mate, £20 tops, easy job too
You should not try to repair the fulty joint just replace the entire shaft , it will run you a few hundred dollars. ( 200- 400).
If you replace the entire cv joint axle in MD you will have $82 in the new axle + labor in a garage $40-$60 per hr. I did it myself. not a bad job.
expect to spend between 150 to 250 depending on the price of the axle. that is the going rate in my shop.
It all depends on whether you want to do it yourself or pay a mechanic. The cv joints in my impala were 160 for both with me replacing them.