Wear on CompTips is generally related to cosmetic issues. I know of no difference in performance due to age. Never heard that. The CompTip is a North American Class issue rather than just USA. Anyplace that bought boats from the USA plant, so they are all over the place.
Value? It makes the boat class legal, so the number of people buying a boat is expanded. You can get a new retrofit tip for under $300.00, so it is not really worth more than that difference.
Best to sell one of the masts as a spare I'd guess.
Director of Parts and Accessory Sales
Hobie Cat USA