I've got a new Samsung Galaxy S3 16gb that I want to sell. It's brand new and sealed in box, but I'm not sure of the best place to sell it. eBay is the obvious one, but a couple of mobile phone places have offered enough to tempt me to send it in. igadgetsrecycled have offered £180 for a new phone, but after reading their reviews they seem a bit hit and miss. Surely they can't try and knock me down on the price of a phone which hasn't been removed from the box though?

Cheers,
Josh