RedHat has never been cheap
And now you know why! Seriously, a few years ago when I looked into it properly, RedHat licences cost more than Solaris. I don't imagine that has changed.
The next time I hear some some gullible open source contributors, whose work goes into Linux, complaining that they don't get paid to do this, direct them to RedHat. These coders are allowing themselves to be exploited.