Throttle Cable

I think I may need a new throttle cable soon. Last event I did they paid a little too much attention at my slightly frayed cable during scuitineering.

I checked out your site and the cables are exchange right?

How does the exchange system work do I send my old cable then get a new 1 or do you send me a new 1 then I send you my old 1.
The reason I ask is that I don't want to miss an event in our local series because I am waiting on a cable (can't afford to miss out on the points).