Same complaint re. upgrade pricing. I didn't do the V5 to V6 upgrade as that was also $50 per new instrument... until a year and a half later when I bought Pigments and they offered the V6 upgrade for the far more reasonable $69 or so.
I'll be ignoring V7 until there's a sub-$100 upgrade available. I assume there will be, eventually, but I don't get the brutal upgrade pricing or the lack of an "upgrade to our just-released new thing NOW, for half price" limited-time 'loyalty' deal. Like most other companies do.