It's not cheap, but it's within reach.

University of Guyana has bachelor's and master's for 5,000 USD, and doctorates for 7,000 USD.
uog.edu.gy/tuition-fees

At Lincoln American University School of Medicine, the first year is 11,000 USD and subsequent years are 6,000 USD.
laumed.org/fee.php

Georgetown American University has a BSN program for 7,000 USD.
gau.edu.gy/tuition-fee-policy/

You'll have to contact Greenheart Medical University to get tuition fees, but I suspect they're affordable.
gmu.edu.gy/admissions/tuition-and-fees/

There are many more schools offering programs that can go as low as 3000, but I suspect international students will be paying more like 5000 at the lowest.

It's a lovely place with great people and vibrant culture. You'll leave with a competitive education and some great experiences. If you want to know more about life there, read my thread on Guyana.

There's a lot of oil money happening there. And the population is tiny. Some of you might want to take another look at Guyana.