Microsoft hasn’t released the official pricing for Windows 7 yet, but an internal Best Buy memo that was leaked to the web last week indicates that company plans to sell the upgrade version of the software for $50 (Home Premium) to $100 (Professional). No price was given for the Ultimate edition, but it’s likely that most users will be happy with Pro since – unlike the Business edition of Vista – it includes Windows Media Center and all other features of Home Premium in addition to the ability to join a domain and use EFS, Remote Desktop as a host, and other business-oriented features.