Is it? They probably have a high airport rent, and have a fleet of drivers with reliable and relatively comfortable cars, and at certain times, it takes over an hour (like tonight) to get to San Telmo, which is on the "close to EZE" side of town. For a lot of people, reliable and safe is worth extra $. Most people are not equipped to handle a local remise service upon arrival. I used a $115 service, but knew I might not end up with the best car (however, I did). I also know where I'm going. You figure the average North American visitor here has paid $1000 for airfare, $150+/night for hotel, and spend way too much eating at Infierno de Turista Loca. Under US$40 for a ride averaging 45 minutes (by the time you get in the car, get out with your bags, etc) on a toll road in a place where fuel isn't really cheap, in a reliable air conditioned car isn't a horrible thing. If people weren't paying it, they wouldn't charge it. And there are options.