Solid post, Prolijo, and, I essentially concur.
For me, the value of PayPal is that it is fairly instant....you don't need to jerk around with faxing cc data to InterBus and all the jive that can and does happen often with InterBus...delayed emails and confirmation.
http://www.shuttlebus.co.cr/ is simply more personal given it's owner manned and operates out of the USA. I posted earlier that the owner of the outfit was the CIO for InterBus for 5 or so years and is on friendship basis with the owner of InterBus.
I understand what you write about the "day trip" remark I made. I just didn't want to go into inane details, but I shall: I took the public transport to
http://www.rainforestrams.com/craintro.html which means I took the same public bus which runs to a city, name I currently spaced out. I was stupid and got pickpocketed....first time EVER...and that's in over 40 years of local style travel. I always thought my front pockets were secure. I was wrong. I was dumb....I was not paying attention and got hit with a classic. Long story short, it was simply resolved within 2.5 hours of the incident....but it was a headache a guy like me doesn't deal with well. I'll keep stuff in my man purse/back pack when on a bus.
The amount of money I would have paid for the "semi-private transport" provided through InterBus but booked through searchcostarica.com would have been worth avoiding the headache and anxiety I experienced and put myself through is all I was saying.
When last I checked the day trips on searchcostarica.com, I thought they were very much different than InterBus, but maybe that's all changed as I haven't looked as of late.
What I do know is that I grew disenchanted with the slow and idiot like replies I was getting from InterBus and will use the alternative, at least from the Airport to San Jose due to the poor customer service InterBus provided. Just one guy's view. And, I am anxious to take the bus from the airport, but not at 10pm at night....thus far that's when all my flights seem to arrive.