Name of the plugin you want : Arcade Games
Spigot Link : https://www.spigotmc.org/resources/%E2%9E%A2-arcadegames-new-splegg.49093/
Price : 13.50 GBP ( 15 euros )
How it would contribute towards the betterment of the community : It's a great all in one plugin for minigames servers.
I know that...
Name of the plugin you want : The Floor is Lava
Spigot Link : https://www.spigotmc.org/resources/the-floor-is-lava-beta.43251/
Price : 1.49EUR
How it would contribute towards the betterment of the community : its a very unique minigame and it would help minecraft servers grow.