I have bachelour degree of pharmacy and I am 30 years old .I am looking to have MBA with least cost and online with certified certificate .what can I do plz

Certified by whom? The cheapest online MBAs with meaningful international accreditation are listed at http://www.bestmastersdegrees.com/top/affordable-aacsb-online-mba-programs

The UIC / Coursera program is 20,000 USD, I believe.

Also, some good discussion here:

http://find-mba.com/board/general-forum/cheapest-online-mba-worldwide-39945