Name of the plugin you want: ChatSentinel - Premium Configuration
Spigot Link: https://www.mc-market.org/resources/9809/
Price: 3.00 USD
How it would contribute towards the betterment of the community: It would help servers prevent flooding, spamming, swearing efficiently without spending hours...
Name of the plugin you want: OverFlow AntiCheat
Spigot Link: There is no spigot link, only MC-Market. https://www.mc-market.org/threads/486363/
Price: I don't really know
How it would contribute towards the betterment of the community: It's a good anticheat, it would help a lot of servers.