I did see that.  However, just for kicks let's use round numbers.

Say the upgrade price from 7.5 to 8  is 300.00.
The upgrade from 7.0 could be 595.00, and that statement would still be correct because both camps would have spent the same amount to upgrade to version 8.

I hope that isn't the case, but I can see how it might be the case.

John