hey, gaurav_rulez please state if you intend to buy only original consoles from authorised shops or not. If so, then go for PS2 as XBOX 360 will not be available even in th ecoming year. ( I think even XBOX is not officially available ). Forget PS3. The cost of PS2 is 14,500 at the Sony World.
Now, if grey market shopping is what you are asking for, then PS2 is for Rs. 7,800 ( the SCPH 7004 slimline model ) and Rs. 6000 ( For the older PS2 version ) . XBOX can be purchased for around Rs. 9000.
Now, if you are not a very serious gamer, then PS2 with the modded chip is the way to go. The huge no. of game titles, easily available peripherals ( a secondary Dual Shock controller costs only Rs. 500 and the memory stick is for Rs. 700 ) However, the graphics engine of XBOX beats the PS2 without doubt. So, you decide....
XBOX 360 is a distant dream even for the grey market buyers. So, unless you have a close relative in the US, simply don't consider it.