It is very expensive to get the 90 day residency visa thing if that is what you are referring to! You do not do this unless you want to start the residency process and you will end up paying for 3 months over stay at the airport anyways because kayakat wants to stay for 6 months.
DO NOT Get that kaykat!!!!!
It is no big deal at all to pay the overstay at the airport on your way back home! No one cares that you are illegal here!!!
You may be right at this point in time but with the new immigration and naturalization laws that will change in the very near future. You can take your chances but at some point they will most likely abolish overstay penalties and you will need a cedula to be able to stay in the country for more than 30 days. Ignorance is bliss.