Looking for a cheapish rental car

I live in the Central Valley, so I mostly get around by bus/uber. My girlfriend and I are moving to Samara in June, and I would like to rent a car just for the month.

I make ok wage for CR, but all rental places seem to cater to foreign tourists, and prices reflect that. Do you guys know where I can rent a car for 400 dollars max, total, with no hidden fees? Im 23 btw

Thanks for your help, Pura vida!