I spoke to one of the managers at PC World. The new stock is all gone and was being cleared, hence the £499. They won't be getting any more, apparently. The £799 was a relic which hadn't been removed from the system (they have now). It was the price they were selling refurbished systems for when new was still over £1000. He thought there might be a few more refurbs available through the website in the next few weeks, he thought for about £399. En lieu of this, I'd lower the price you're prepared to take! It may be a good machine, but Advent just isn't a name which will hold its value. A bit like buying a Vauxhall (Opel) or Ford ... some of the cars might be fine, but you're a fool to buy near full price, because value dives!