Your clearing firm should be able to assist you with getting this set up. There are plenty of IBs out there that run their brokerage business side by side with their CTA. Obviously, this needs to be put in the DDoc. If you have any other questions send me a PM.
They say you only pay once, but you can not have access to real time data simultaneously. So you can be on your wirless but not on your PC at the same time to receive live quotes.
It's not the vendors who control the fees it's the exchanges. 2nd biggest source of revenue for them. And the exchanges don't care if you have bloomberg, cqg, dtn, ect. You pay for their data on each system.
There are several successful prop shops with various deals in Chicago. Not all require upfront $$$ GH, KingStreet, Mac/Refco Trading Services to name a few...
Globex is the electronic engine the CME uses for electronic trading. Depth of market for open outcry products like the big S&P is not available. The data feeds can only carry the depth of market for electronics.
I used Securities Training Corporation. They give you a book and practice tests for about $90. There also is a software program by someone else called PassTrak that is decent.