Yeah but you need to pay separately because it’s based on ReSharper, there’s no .NET plug-in for IDEA Ultimate.

But if your buying the full version, then the full library is only another £100 to begin with.

Cheaper for personal use, and free for students.

https://www.jetbrains.com/idea/buy/#commercial?billing=yearl...

There's also the issue of managing separate apps which I find to be a pain.

"only" another £100? That's a lot of cash.

That depends on perspective. If you are a professional programmer using JetBrains tools as daily drivers then I think think £100 over the InteliJ price is pretty reasonable to get access to their entire library of tools.

Consultants make at £400 day here, dotnet devs usually more.

If you are a hobbiest, it's cheaper.

And the costs decrease each year.

If you are saying £100, then it sounds like it would offer you money for value, so it's probably not for you.