Amazon WorkMail cost enquiry

Hi,

Please, consult https://aws.amazon.com/workmail/pricing/ for all details

With Amazon WorkMail, there are no upfront fees, no required minimum commitments, 
and no long-term contracts.

Amazon WorkMail costs $4.00 per user per month and includes 50 GB of mailbox storage
 for each user. You can get started with a 30-day free trial for up to 25 users.

If a user is created after the first of a month, then the monthly fee for that mailbox will be 
adjusted on a pro rata basis from the first day it was active to the end of that month. If a 
user is terminated or deleted before the end of a month, then the monthly fee for that user 
will still apply through the end of the month.

Best,

Didier