I'm selling my 128GB iPhone 7 on eBay and have three potential sellers asking if I will also supply the receipt with the phone. The receipt contains a lot of personal info which I'm not sure I feel comfortable sharing with a stranger. But, even if I do supply it, is it really any use to the buyer? Don't eBay keep track of serial numbers/sale dates etc.? Is it possible for someone with bad intentions to use the info on the receipt to scam me in some way?