Its just too expensive, you cant host your custom domain name on free instance. And there's nothing between 0 and 50$.
I'm waiting for prices of azure web sites, hopefully it would compare to shared hosting prices.
Can you explain to us why such basic functionality is so expensive?
Is there a legitimate technical reason for the cost, for example? Or is it subsidizing some other service? Or is it that high just because some people are foolish enough to pay that much for it?
The paid plans already include hosting on a custom domain. I find it surprising that they let you pay a la carte for custom domain support on the free plan as well.