Xbox Controlllers, necessity?

Hi, I read that you actually HAVE to send in your controller of choice in order for you to test the game, but then I’m just curious… don’t you have controllers already? Wouldn’t it be more trouble for you if you had to resend back for every XNA-game that utilizes the Xbox-controller than just rounding up some by yourselves before the testing begins?
We can of course send a controller but I’m just wondering if it can be avoided.
//Markus

It can be avoided but if you are able to send one in you should. I wouldn’t rely on the possibility that there will be one free.