The licensing deal is for more than just the domain. It's like hundreds of squatter domains, too (including, hilariously, goblinlove dot com), and the trademarks.

And the reason why it's exactly that amount isn't about the cost of the domain. It's that the physical studio's rent is about $75k/month, and they need to keep that lease active long enough to buy the whole shebang once Alex Jones' appeals run out.