"Car rental in Costa Rica is an opportunity to explore the remote beaches and quiet corners of this breathtakingly beautiful country, without the restrictions public transportation or group tours impose. For the unprepared traveler; however, car rental costs and services can be a rude shock and a blow to that vacation budget."
Thanks to Sara Ford for her permission to reprint her comparison article here -- as her last one received a substantial amount of views (over 5,000).
Make no mistake, Sara did all of the research; we're not taking the credit. ;-)