I have written already about the confusion in Blogger documentation
Remember: you only need to get the domain name; you don't have to pay extra for hosting service.
Today, as I explored the possibility of publishing The Real Blogger Status to a Custom Domain, I found more misleading documentation.
Domains are registered through a Google partner and cost $10 (USD) for one year.
I went to Settings - Publishing, and selected "Switch to: • Custom Domain".
We are immediately offered registration through "a Google partner". No mention here of DNS hosting, or of any additional fees.
Selecting "Switch to advanced settings", we get the familiar setup.
Here's the well known advice "... you don't have to pay extra for hosting service.", when we select "setup instructions".