We all know that Microsoft is giving away Windows 8.1 with Bing for devices with display size less than 9-inches for free. The exact pricing details around Windows 8.1 for OEMs was revealed today. Microsoft has many different SKUs which OEMs can opt for. The Windows 8.1 with Bing for small tablets costs $10 and Microsoft will offer configuration discount of $10. So, the net cost is zero dollar for the OEM. Similarly, Windows 8.1 with Bing for tablets with size more than 9-inches will cost $25 per unit. After configuration discount, it will cost $15 for OEMs. In the recent times, Microsoft has started bundling Office 365 Personal with Windows 8.1. Even those SKUs cost the same for OEMs. Basically, Microsoft is giving away Office 365 Personal 1 year for free to all these consumers.