Agreed some product of cisco have lack of clarity what needed (may be marketing i guess)
as i look below :
Licensing
WAE Design software licenses are based on user, application, technology, and device type. WAE has a Smart-enabled software subscription license. For more information, contact your Cisco account representative.
https://www.cisco.com/c/en/us/products/collateral/routers/wan-automation-engine/cisco-wan-automation-engine-ds.html
contact local partnet is bet option