MissingRainbow writes: "Microsoft Office 2007 software is now available as a pre-paid service in India. While buying a computer you can obtain a pre-paid license for a specific duration (say six months). And after that period, it can be renewed. They are comparing this service with the mobile pre-paid cellular services. The price difference between perpetual license and this pre-paid license is quite huge. A perpetual license would cost INR 15,000/- while a pre-paid license for six months would cost just INR 1500/-. So if the MS Office release cycle is less than 5 years, it would make sense to go with the pre-paid option. Otherwise why would anybody want to go pre-paid?"