What will Apple do about a small scratch on my iPhone 5 that I am sending to them
Recently, the lock button on my iPhone 5 (silver and white) has stopped working which is extremely annoying, as I have to use assistive touch. So, I still have a couple months left with the free manufacturer warranty that comes with all devices, so I called up my service provider for my iPhone then I was transferred to apple. I was told that I have to go to an apple store or other stores and I can get my phone check out and have it brought in for repair, but I live in a small city and there is no apple store or anyone of the stores suggested (closest apple store is 2+ hours away drive) so I was told they will send me a replacement iPhone 5, which I'm fine with. They asked if my iPhone has every been dropped or exposed to liquids, which is a no, I've never done that. We sorted out all the information, and very soon I'll have an iPhone 5 sent to me, and when I get that iPhone 5, I send my current one (with unresponsive lock button) back to apple. Seems great right? Well, I was told if there is any liquid or physical damage that $600 will be taken off my visa and so on, and now I'm extremely worried. On the back of my iPhone 5, there is a light scratch that is about 1cm in length. The scratch is very light, but after reading some information, it appears as if apple will not accept my iPhone in those conditions and I will have $600 removed from my visa. I'm freaking out, so, can anyone explain what might happen? And let's say apple does not accept my iPhone 5 in its current state, can I just ask to have my iPhone 5 back and I will send the replacement iphone back to them, and I get my money back and we all be happy??
Thanks
iPhone 5, iOS 7.0.4