I inquired to my dealer -out of curiosity- about the extended maintenance plan and warranty (which are two separate things, let it be known!)
Also, apparently the price increases the closer you get to expiration of the original service/warranty plan...
I'm personally not worried about maintenance since I can do everything myself but wouldn't mind having an extra 2 years and 50k miles warranty for peace of mind. Who do I ask? My dealer wanted like $3k which I think is a bit excessive.