Just looked it up and we do get the profiler free (99% sure). "Game Performance Reporting" says
"A preview of a new service that monitors and analyzes managed code crashes from your games."
Profiler falls under the engine features http://unity3d.com/unity/engine-features
More here
http://unity3d.com/get-unity
Can't download at the moment because, well, site is getting hammered haha, so I could be wrong but would be nice.
Good that you have that now. I am still put off by the no source. I was doing some prototyping and found a bug in some fairly basic stuff (2D physics trigger event problem), that had been in there for 6 months at least and not fixed. Could have fixed it myself in a few minutes if I had source, but instead I had to write an ugly hack to deal with it.