The prices seem really reasonable and a steal if I was still in an enterprise environment. I'm not maintaining any prod servers right now, but $4.99 would be a sweet spot if I had a few hobby servers on the Internet that I was doing devops for.
Wow, that's extremely low pricing you're looking for. I think the current pricing isn't only fair, but the top end is somewhat low.
I agree with the sentiment of the other comments in that the price issue is only an issue from a single-user perspective and is fine for enterprise.