Enterprise Licensing for lower environments

It is a common practice to have a few lower environments like DEV and TEST in addition to the Production Environment.

How does the licensing work for lower environments?
If we buy the license for Production Cluster on AWS, does it include license for lower environments?
If yes, how many lower environments are included ?
if no, what is the cost of the license for the lower environments?

That question is best to be answered by the local sales rep. Please send me your email and where your based via PN and I'll bring you in touch with the right rep.