I want to buy an iphone 4 but not for the full price. I found a craigslist ad and the person told me he also has the receipt. He also gave me the serial to check the warranty. http://vancouver.en.craigslist.ca/van/ele/2574269234.html What are the chances that this is a scam and the seller will report this stolen after I buy it? Thanks. Edit: If I do buy this should I take the receipt? He was hesitant when I asked for receipt and stated that all his information was on it.