That's what I thought, the description says that if you subscribe you get your next Vue upgrade at half price.  So I assume that means if I bought Vue 9 now with the monthly subscription, that when Vue 10 complete comes out I'd be offered that at half the upgrade price.  The price of $150 is $50 less than I'd pay for the upgrade without a subscription and my next upgrade according to the web page would be "up to 50% off your next upgrade".   So it may be more economical to do it that way if I want to upgrade to Vue 10 Complete than just doing the "sidegrade" from Vue 8. 

The question is would I really be saving anything by doing it this way if you add the  monthly subscription payments or would it be better just to "sidegrade" from Vue 8.