Studying is an investment in yourself. Education pays off in so many ways that it would be reductive to list just some of them here. Specifically, studying abroad can make you a totally new person because of the high value added that derives from such an activity, not just academically, but also personally in a very complex way. For example, I have personally discovered myself while studying abroad. Hence, no investment can be comparable to this one in my opinion for a student.
However, money is an important issue, especially if you are not financially self-sufficient while studying. The best way to drastically cut costs while still enjoying a life-changing experience is to find an institution with low fees for free movers. Take a look at the University Finder if you want to find a destination that fits your pockets. Additionally, scholarships can help you as well. It’s not common to receive one, but there are some possibilities if you try.
I must be honest: it is not easy to win a scholarship for your free mover semester, since they are given by various organizations with different sets of rules. Arm yourself with patience: there are many!
Shiksha study abroad: https://studyabroad.shiksha.com/scholarships
Diversity abroad: https://www.diversityabroad.com/scholarships
Go overseas: https://www.scholarshipportal.com/