ellen - you can get a price quote online with any of the companies i listed. they display the cars available for renting with a description of each one and how many passengers and bags they will hold and the price. really no need for emailing.
because the ones i listed all have good reputations, you can count on getting good service.
don't assume that hertz, avis et al are more expensive - check them out. all of the ones i listed are costa rican companies. some of them have the names of big companies like hertz but they are owned and operated locally.
i understand that renting a car can be a difficult decision - i don't think you are picky.
as an example of what i am talking about, go here [http://www.solidcarrental.com/index.php]
you can google each of these car rental companies by just putting the name and costa rica afterwards. like "hertz costa rica" and each will give you the type of car and price.
Edited by: wiremu