This is somewhat strange pricing - it seems ridiculously cheap if they're trying to make significant profits off of it, but pricey enough to prevent tinkerers who don't really know about coding but feel like trying it from getting a start in xcode.
I can understand how the cost of a Happy Meal might deter someone who wants to try their hand at coding. I mean seriously, you're going to spend at least 10 times that amount on programming books, or thousands of times that amount on college classes.
If all you want is to learn programming, there are free alternatives to XCode.
How much have you spent on iPhone apps so far? I have friends who spent several hundred €, one Happy Meal at a time.