HTC ONE X, QUAD CORE .

Hi, I have a Boxed and Unlocked Grey HTC One X with 10 months warrenty left. I have the original receipt for the phone purchased for 450. It comes with all the manuals and a generic charger as lost the other one and samsung usb cable. Unlocked to all networks, very good condition, very fast quad core proccessor. Also comes with beats audio. Wanting to swap for a mint Samsung Galaxy S3, May add cash for the right one. Would swap for a Iphone 4S mint, unlocked and boxed. Would sell for 320 ONO,Thanks.