This is what the Vue 8 email said:

Upgrades from Vue 6: If you are a user of Vue 6, you can upgrade directly to the corresponding Vue 8 product! (for instance, upgrade from Vue 6 Esprit to Vue 8 Esprit, or from Vue 6 Pro Studio to Vue 8 Studio, etc...). You can also sidegrade from Vue 6 Pro Studio directly to Vue 8 Complete. If you are still using Vue 6 Infinite you can either upgrade to Vue 8 Infinite, or choose the cost effective Vue 8 Complete alternative.

*These upgrade options will not be time limited.

*Actually it's a staggering $435 for the box Vue 7 Inf and $395 for the DVD case or download version--you're right it would be a lot of groceries (money is tight all around).  I've spent more money on Vue than any other program I've owned and have not used it enough to make it worth that kind of money.  My computer is finally up to specs where it would work better for me; but unfortunately I'm 32 bit and I pale at the idea of reinstalling a clean Windows right now just so I can use Vue better.  Heck for $435 you could buy a new laptop now-a-days.