[akuchling]

My rule: when buying a 'lifetime' service, assume that equals 10 years and weigh the cost accordingly. A lifetime Nebula subscription is $300, so $30/year. Is that reasonable to you for the service? Then go for it, and be pleasantly surprised if it lasts more then 10 years.

[gkhartman]

I do this too, but I use 3 years instead of 10. I think that's mostly due to the idea that lifetime memberships are most often offered by start ups that can be very short lived.