I second that motion put forward by Dan357- I to used interbus when I was there in Sept. It's the best deal going at $9.50
especially for pick up from the airport to your hotel -- now I also used interbus for the ride to the airport from the hotel, my departure flight was at 2pm and interbus picked me up at 9:30am from the hotel so I had some time to kill at the airport other than that how can you beat $19.00 around trip to and from the airport.
link to website below - on time pick up, the only person in the van both ways - tip- don't worry about having them waiting for you if your flight in is late as they radio the driver to pick you up only after you check in with the interbus representative holding a sign with your name on it just outside the airport- I was able to get my sim card at the I.C.E both and liquor and crossed over to the departure side of the airport to exchange my money at the little bank both and than checked in with the interbus rep, he radioed the driver waited 10 minutes and off to the hotel all paid for in advance - it was a beautiful thing - thanks is owed to the CRT brothers who shared this info on the board before
http://www.shuttlebus.co.cr/[url][/url]