If you can come to Sahiwal, for just giving exams, you shall just have to pay 15-18 K maximum per year for LLB. there are 3 Law colleges here and due to lower fees, many students from Lahore and even away from Lahore take admissions. All colleges in Sahiwal, offer LLb from BZU and,it's not compulsory at all to take classes.
Muhamamd Law College
Quaide Azam Law College
Multan Law College.

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Pakistan Zindabad