Pursuing Graduate and UnderGraduate studies from Pakistan is Economically very cheap.
From Public Sector Universities , which always stands on top in Pakistan except few like GIKI , LUMS , NUST , IBA etc (which are also SemiGovt Institutions)
For pursuing UnderGraduate degree from Pakistan say B.E(Bachlor of Engineering) , there are always two options.
Merit
Selfinance
Merit
Open Merit +Regional quota.
While I was doing my studies undergraduate overall fees for one year was 3,200 , hence total of 3,200x4=12,800(PkRs)
However this was revised while I was in Final year to one year Tution fees 12,000PkRs so, total was 4x12,000=48,000PkRs.
Can say Maximum fees for Undergraduate Degree in any Public sector Uni. in Pakistan could hardly be 100,000PkRs (AED5,000 or 1,370 UsDollars) for 4 years bachlor degree.
The rest of the Expenses could be living, Housing and Transportation etc.
But if you will not avail Merit (not open or quota) then you have another option that is Self-finance 4 years before it was PkRs 200,000(2,500UsDollars) , in case they have increased would be hardly 400,000PkRs (5,000Udollars).
This will be only tution fees , living , food , transportation etc would be plus to it.
For Postgraduate studies there are abudance of HEC(Higher Education Commission) scholorships, however one can go for selfinance scheme also.
Two years postgraduate fees in Public Sector University could hardly cost upto 200,000 PkRs and can say same for Private Sector University.
NTS(National Testing Services www.nts.org) conducts GRE type test known as GRE Local that have quantative, verbal and analytical parts only.
on the bases of GRE Local plus previous acadamic records admissions are given to any pakistanis regardless of Domicile and HEC Scholorship could also be availed on the basis of GRE Local score.
In case some submit his/her ETS , GRE general score that is accepted and find more preference in admissions and possibly he/she can find abroad education funding.
As Dormant pointed out there are ample opportunities for students to finance theirselves by tutoring in big cities like Karachi such opportunities are in abundance.
However first option could always be assistanship in case of Postgraduate/Phd studies.