To the OP:http://www.lawschooldiscussion.org/prelaw/index.php/topic,74733.0.html
^ that post is there for a reason.
You want the Bibles(PowerScore Logical Reasoning Bible + PowerScore Logic Games Bible)
Powerscore's 2004 LSAT Deconstructed
ANY AND ALL PretTests issued by LSAC(Can be found on their site) the more recent the better.
Look on EBay, a lot of people sell 'bundles' with a bunch of PrepTests, the Bibles, and random LSAT prep stuff after they get their score or after the most recent LSAT. Sometimes cheaper than buying everything seperately, and it wil lall arrive at once(massive shipping charges though, but since you are in Pakistan, shipping will already be pretty high if you order stuff from the US).
Never buy anything from Kaplan. Ever. (I did actually just buy the Kaplan Mastery Practice for kicks, so I'm withholding judgment on that particular book until I've worked through it, but I don't expect much...)