New Galaxy S3 with 2 year warranty +

Upgrade received today. Box has been opened to take out the simcard, check all is there and take a photo. It is on orange so may not be unlocked but Im told it is easy and free to unlock it yourself or by anyone who knows about these things. Its called voodoo app I think. Anyway its a brand new S3 in pebble blue. I have contacted Samsung and was told that anyone can use the warranty for the next 2 years. I want £399 cash and can meet up. Offers will be considered. I can sell for £400+ on ebay if this doesnt sell here