SoYouStart Game servers seems to be good value for the price:
https://www.soyoustart.com/us/game-servers/

But what are the resellers of these servers if one do not want to buy directly?

Here is what i found when googling CPU name:
(sorting from cheapest at a time of riting this post)
https://www.hostbyus.com/game-servers
http://www.wdmsh.com/game-servers.php
https://britainconnected.co.uk/dedigame
https://mydedis.com/dedicated.html

https://bungeecloud.org/dedicated-servers.php
https://www.webhosting4u.gr/gr/gaming-servers.html