in fairness, there are people out there who are rich enough to buy an expensive camera/bike on a whim, know nothing about it other than it takes pictures/gets them about and then get bored with complicated cameras/bikes with dropped handlebars and flog them on. of course they could look up the model and copy and paste the description on the manufacturer's site, but probably can't be arsed.
if he's got the receipt, that should be ok.
Indeed. OCD types with the money to indulge their obsession are the Koh-I-Noor of every eBuyer. They do exist, I had an aquaintance who ran a gadget shop and flogged stuff regularly to a very high profile footballer. What was important was he had one of the first few iphones/unobtania/hen's teeth and could talk about it in the dressing room. Most were replaced instantly. Stephen Fry spoke about going out to purchase an MP3 player and coming out the shop with lots of them if he was feeling particularly up or down. Elvis bought Harleys for everyone in earshot if if he was having one himself. I knew a chap who had the wherewithall to buy cars on an almost weekly basis. The fun wasn't owning them clearly, or they wouldn't have been flipped so quickly, it was purchasing the thing and yer man's camera may be the same thing. Then again it could have been half inched.