Just tell the dude you have 1400 cash. You'll buy them for that amount, but only after you have had a chance to test them to make sure there is nothing wrong with them. (not to listen to them to find out if you like the way they sound). That is a fair price. To try and "get the best deal" has about the same moral aptitude as someone trying to rip off a buyer. Buying / selling is a two way street. Tire kicking low ballers have as much integrity as scammers.