The license status can be checked within the NSX Manager (Home ->Network & Security -> NSX Home). vCenter does not display correct status (Home-> Administration-> Licenses) because it always displays zero usage.
Consumption can be monitored via virtual machines, vCenter, and how much memory is reserved. It depends on the products used and it is not possible to estimate the required number of licenses in advance. The subscription model works on the model of consumed points. Model is very similar to the mobile operators, where the user always pays the minimum number of points, regardless of how many resources user spends. If a user spends more points than he has in contract, the user pays the difference to the excess of points used. Each plan is contracted for 12 months.
For partners offering hybrid cloud solutions based on multiple VMware products. The partner must have a strong technical background and have 3600 points. There are additional discounts on licenses and marketing benefits. 2b1af7f3a8