Grips

Got my clubs off golfbidder a while ago and it rated the grips as 7/10 been playing about a day a week since april with them, how do i know when they need new grips on?
How much is a resonable price to get them done

If you are doing them yourself then check out the Lamkin golf grips website.

Pretty good online wizard and size chart to give you an idea. 

I seem to be missing something in this debate as I have never changed my grips on any set that I have had, in fact my blades are fifteen years old with original grips still in great condition.

I do need to change the grip on my driver as it is too thick and my ancient ping anser needs a new grip, but then it is over 40 years old.