Warranties are priced like insurance -- the manufacturer provides them to a wide number of cars, based on a fairly predictable cost over many users... e.g., warranty risk / benefit / price averaged over 1000's cars that you know the mechanics of, is pretty easy to calculate.
It is very difficult to calculate for an individual, however, as the chance % of problems are individually low.
I presume that warranty work (not covered) would not be a financial disaster for you, so the risk to you is modest at best.
Therefore, the only way to price it is with your emotions. (Ha! take that answer forum!) How much would a warranty provide me with piece of mind / lack of spouse nagging / enjoyment of the vehicle. Is that worth $200? $2000? IDK. Only you know.
In my opinion, the hassles of following maintenance guidelines, using a remote to me dealership, to maintain the warranty is about equal to the value of the warranty, so I would not pay for it. But likewise, I have no trouble driving older vehicles that need minor work every 6 months by my easy to work with, biking -distance mechanic shop.