I think "Sold" and a non-crossed through price means they sold at the advertised price. A finished auction from a lower offer is shown as Sold with a struck through price (but not what the offer price was), and if the auction was ended early because it sold elsewhere it says Finished rather than Sold.That doesn't mean it actually sold on eBay for 450 does it? If any item is listed and subsequently sold elsewhere and then the seller just clicks sold or no longer available, surely it'll say it's sold at 450?
Who knows?