Well,dude i may not own an XBOX 360.But i know a lot about it,firstly you have to know which one you want,do you either want Modded or Un-Modded,the Modded one is basicly the console in which you can buy cheap pirated games,but you can't play online,because if you will,than Microsoft will ban you,and on the Original one you have to pay full price for original games,and there kinda expensive.But you can play online easily,also the original games aren't available in Pakistan you have to buy them abroad.Ok now lets get to the Models,there are two types NTSC-J or PAL,NTSC-J is what most modded games are on,but PAL has very few games.Now lets get to the SKU's there are 3 types available Arcade,Elite,or Slim,but i recommend you buy the Slim or Elite.
The Prices,
XBOX 360 Slim: Rs 34,500
XBOX 360 Elite: Rs 28900
XBOX 360 Arcade:Rs 19850
I hope this helps! if you wanna buy you can go here!