Refurb condition described as 'like new', and is a 14 day return.
To get this price you need to take out a data contract, which you can cancel straight away and forces you to pay off the remainder of the device plan.
Device plan: £2 per month + £4.99 upfront = £52.99
Cheapest data plan: £5 per month (500Mb)
Not done this before myself, so I think that's how it works, but there have been other deals posted along these lines before.
EDIT: Quidco has tracked at £10, though I'll believe it when it's in my bank account