Here are the spot prices today for single static IP addresses (based on a 30 day month):
October 12, 2021
Azure - East US
Google - Iowa
|In Use (Standard VM):||$2.88/month|
|In Use (Preemptible VM):||$1.44/month||Not in Use:||$7.20/month|
Amazon - US East N. Virginia
|First IP while In Use:||$0/month|
|First Not Running or Additional:||$3.60/month|
Price remains pretty constant so there does not seem to be any demand issues influencing the price of IP addresses. In fact, Azure price seems to have moved down slightly, over and above my mistake in using Azure's default 730 hour month calculation last time (there are no months with 730 hours in them, that I know of).
Perhaps this is the new, metric February we've been hearing so much about. :)
I think it is time to seriously look at the issues with security and factor that into the equation. Will be creating a blog post on this topic in the coming weeks.