Could you add commas to {UNIQUE}.
https://github.com/drtshock/Essentials/blob/2.x/Essentials/src/com/earth2me/essentials/EssentialsPlayerListener.java#L256

Now it returns 2355149, it will be nice if it returns 2,355,149

This has been fixed in 535fb43. You can grab the fix from build 397 on the CI server.

Woops, I've told you the wrong replace location.
https://github.com/drtshock/Essentials/blob/2.x/Essentials/src/com/earth2me/essentials/textreader/KeywordReplacer.java#L146

That must be the good one,

@SupaHam ^^

This has been fixed in e0d69d0. You can grab the fix from build 402 on the CI server.