What does Transition Pack Include?

Right now, we have 10 USER CALS for SBS 2003. We would like to get out of SBS, but still have exchange and all of the features of SBS. We were looking at the Transition pack in order to transition from SBS to the regular FUll version of Server software.
My Questions:
1. For the price, what do you actually get with the transition pack?
2. Does the Transition pack automatically give you up to 75 users since you would have to purchase the transition pack to go about the 75 user limit?
3. Does SBS still enforce licensing once you install the transition pack? I have read online that only SBS enforces, and that otherwise it is up to the admin to enforce licensing if you are not using SBS because regular 2003 standard does not have licensing enforcement since they figure SBS needs it because of no onsite IT, but otherwise onsite IT is supposed to monitor and regulate and enforce licensing compliance. Is this true?  Not trying to circumvent or get around, but just for general knowledge to clarify what I have read online.

Any help is appreciated. Thank you!