Prorated pricing lets you purchase an Upgrade at discount if you have purchased the prior version in the past year. The calculation is simple. If you purchased half a year ago, you get half off Upgrade pricing. If you purchased three-quarters of a year ago, you get one-quarter off Upgrade pricing. (6975)
Combined with a standard 90 days of Buyer's Protection, which gets you a free upgrade if you purchased in the last quarter of a year, there is now a comprehensive approach to dealing with surprises. Similarly, new versions of Big Business will strive for comprehensive coverage of current operating systems, being used together, and facilitating an instant switch from one version to another.