Tuition costs for international students in the USA vary widely, but some relatively affordable options include public universities in states like North Dakota, Wyoming, and Mississippi. For instance, the University of North Dakota and Mississippi State University offer relatively lower tuition rates for out-of-state students. Community colleges can also be cost-effective choices. However, it's important to consider living expenses, scholarships, and quality of education when evaluating affordability. Research thoroughly, explore financial aid options, and assess programs that align with your academic and career goals to make an informed decision about the best and most economical university for you.