What are the costs of attending University in Mauritius over a 4 year period?

Besides what @Muzzammil said, different courses have different fee structures. You need to take into consideration the annual course fees as well as any lab fees or additional costs associated with your chosen course. For example, engineering students will need to use workshops, chemistry students the lab and other discipline require field trips.

It depends on which course you wish to enroll on. The University of Mauritius has subsidies on the courses which will eventually cost you less. For a 4 year course it might cost you around MUR 40k-50k per year. Private institutions like Charles Telfair Institute will have more expensive tution fees. You can choose among a variety of private institutions which are approved by the TEC (Tertiary Education Commission). For example the fee for a BSc IT during 4 years including your internship will cost you around MUR 75k at Atlantis Business School: http://abs.ac.mu/. Do proper research and choose wisely.

Around 125000 Rupees

there are parts of uom website not loading right now but it do consist of price of courses

for CTI (charles telfair institute), it used to include fees on its website. Browsing through the website now doesn't show any sign about fees

UOM website does include fees information

International students UOM INTERNATIONAL STUDENT FEES

check out UOM website for more info

About CTI