Windows 7 operating system versions or editions:

• Windows 7 Home Basic - Entry level OS with no Aero Experience
• Windows 7 Home Premium – Complete home entertainment and multimedia solution
• Windows 7 Professional – For Business users with advance networking options and backup and restore functions
• Windows 7 Ultimate – It includes all features of Professional edition + Bitlocker encryption + Multi Language support

Windows 7 Price in India – All prices are in Indian Rupee (INR)

• Windows 7 Home Basic Price – Rs. 5,899/-
• Windows 7 Home Premium Price – Rs. 6,799/-
• Windows 7 Professional Price – Rs. 11,199/-
• Windows 7 Ultimate Price – Rs. 11,799/-

Well its much cheaper than its predecessor Vista. It is much cheaper here in comparison to many countries as well.