When I was backing into Disney's numbers doing a Present Value calculation (comparing existing resort points vs SSR), the extra 12 years came to less than $8 per point at their discount rate (~10.875%).
Nevertheless, I think I'd take it if DVD offered to me at up to $10 a point. I am a mere baby at 41, given that Grandma lived to 104; yeah, I'll take an extra 12 yrs, thx.