Here's an article from Cal Poly SLO, concerning their ranking among undergraduate institutions. Cal Poly’s Orfalea College of Business Among Bloomberg Businessweek’s Top B-Schools for Fourth Year Running
It may be within your price range, but getting accepted might be a challenge. You might want to apply to the other schools mentioned in the article as well -- UC Berkeley, USC, Santa Clara, University of San Diego, Chapman, Loyola Marymount, and UC Riverside.
If cost is a concern, apply for any scholarships/grants you THINK you might qualify for. Also, does your home country offer financial aid to their students who seek out their education in the United States? If so, go for it. There's no reason why you should spend more than an in-state Cal State student spends for their education.