OK, so I'm not asking whether I should sell my iPhone 5 or not. Rather, the question is this: Someone on Craigslist is interested in buying my phone, and he inquired as to whether I had a Square reader so he could pay with a card. I've used the reader a bunch, in letting people pay me for music lessons and such, but that's usually a much smaller amount of money. Would you guys be reticent to use this as a method of payment, given that someone could potentially call the credit card company and say that they didn't authorize the payment after the fact? Or has anyone done this and not had an issue with it before? Any thoughts/past experiences with this would be helpful! Thanks all.