Bizarre! I'll look at that first thing when I go in. It shouldn't be displaying the Grandfather/Lifetime upgrade to you.
Lifetime Membership costs $129.95 but if you're currently a subscriber at another level, there's a discount in the amount of the cost of your current subscription. In your case, since you have an annual subscription, which costs $69.95, you can upgrade to Lifetime for $60 more.
This applies to everyone who has any kind of subscription.