The OnePlus One which claims to be the falgship killer was available in India via Amazon India via invitation only. The 162 gram phone features a 5.5 inch 1080 p (1920 x 1080 pixels), display and Qualcomm Snapdragon 801 2.5 GHz processor. It have a 13 MP camera with dual LED flash, 3Gb DDR3 RAM, 3100mAh battery. The operating system will be Cyanogen 11S based on Android 4.4
The 64 GB version of this phone will cost INR 21,999 on Amazon.in
OnePlus One will be available to purchase without any invitation on January 20, 2015 ( source). This offer will last just two hours, from 19:00 to21:00 EST in North America, 19:00 to 21:00 GMT in Europe, and 19:00 to 21:00 HKT in Asia.
If you are looking for a reasonably priced phone which have all the features of a high end flagship you can check this phone.
You may also try to get an invite.