Are there recommendations?
If you need multiple copies you can work with a VAR (Value Added Reseller) to get better pricing.
CDW.com is the big name in VAR's but they have enormous turnover in staff. I try to build relationships with smaller VAR's. I like these guys: https://greenbeetech.com/ it's a small company with two guys running it who have decades of VAR experience (former CDW people).
Navigating the process of compliantly licensing Microsoft as you scale up is quite a job. Having a good partner to help your organization stay compliant is very valuable.
> Similarly if you’re building it yourself you can buy for significantly less from a reseller, many of which are wholly legitimate.
The horses mouth charges $140+, which is significantly more than the $100 that was about.