Re: How much $ to replace a Cork handle?
I agree with swirlchaser. If you're the original owner, and sent in the warranty card, send the rod to Winston. Let them repair it. It'll be around $30+ to have them repair it. (shipping back to you) If you go to the shop you bought it from, let them ship it back.
If you bought it second hand I'd still call Winston to quote you the price of the repair, and have them do it. That way it's done by the manufacturer and done right. (Not saying your local guy wouldn't do it right.)
Life is not like a bowl of cherries. It's more like a jar of jalapeno's. What you eat today might burn your ass tomorrow...