Retina Macbook Pro 2.3Ghz 256gb 8GB RAM 1 Month old Mac -

I have a retina macbook pro, base spec in perfect condition. It has a US keyboard but a full UK power supply. Retina display : 15.4-inch (diagonal) LED-backlit display with IPS technology; 2880x1800 resolution at 220 pixels per inch with support for millions of colours Supported resolutions: 2880x1800 pixels (Retina); scaled resolutions: 1920x1200, 1680x1050, 1280x800 and 1024x640 pixels 2.3GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.3GHz) with 6MB shared L3 cache 8GB of 1600MHz DDR3L onboard memory Height: 1.8 cm (0.71 inches) Width: 35.89 cm (14.13 inches) Depth: 24.71 cm (9.73 inches) Weight: 2.02 kg (4.46 pounds) Intel HD Graphics 4000 NVIDIA GeForce GT 650M with 1GB of GDDR5 memory and automatic graphics switching Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560x1600 pixels on up to two external displays, at millions of colours Thunderbolt digital video output Native Mini DisplayPort output DVI output using Mini DisplayPort to DVI Adapter (sold separately) VGA output using Mini DisplayPort to VGA Adapter (sold separately) Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately) 720p FaceTime HD camera MagSafe 2 power port Two Thunderbolt ports (up to 10 Gbps) Two USB 3 ports (up to 5 Gbps) HDMI port Headphone port SDXC card slot Apple Thunderbolt to Gigabit Ethernet Adapter (sold separately) Apple Thunderbolt to FireWire Adapter (sold separately) 802.11n Wi-Fi wireless networking;3 IEEE 802.11a/b/g compatible Bluetooth 4.0 wireless technology Stereo speakers Dual microphones Headphone port Support for Apple iPhone headset with remote and microphone Support for audio line out (digital/analog) Full-size backlit keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted “T” arrangement) with ambient light sensor Multi-Touch trackpad for precise cursor control; supports inertial scrolling, pinch, rotate, swipe, three-finger swipe, four-finger swipe, tap, double-tap, and drag capabilities Up to 7 hours wireless web Up to 30 days standby time Built-in 95-watt-hour lithium-polymer battery 85W MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port