Struggling for ESC

[PaulRotheram]

I've posted in the wanted section, however im in desperate need and need to get further a feild!
Today I shorted my EZRUN 18 amp esc by accidently cross wireing the batterys (gutted!).
Now i'm due to race next sunday and i've been searching most of the night trying to find a replacement which will be here in time, however im at a dead end!
The only place I can find them is on ebay from HK, however theres only a slim chance itl arrive in time, and im not too confident on my luck after today!

So, does anyone have one, or a good enough alternative I can buy/borrow?
Currently running a 6800kv motor, so needs to be able to put up with that, and no cogging.

Any info on where I can source one, or any help is appreciated.
Hope someone can help!!