Steven:If it isn't 1 , can I bring it back? Seller:Of course. But you must take care of your receipt. Steven : Can you explainit more to me? Seller: OK. Itcan be 2 ifthere's something wrong with it. Return yourpurchase within 14 days for a full refund. Steven:By the way, may I have another brand instead? Seller:Certainly. But you can only change it for goods with the same price or 3 . Steven:Oh, I see. I'll take it.