Just to highlight - make sure you have insurance on these things.
I sent an Orange 5 frame via Parcel Force. It was picked up OK, but never made it to its destination. After much communication with the depot (Bristol), the outcome is a refund to the ebay seller from me, and a claim which is pending now, leaving me somewhat out of pocket.
I wonder if the box highlighted what was inside. I reused an islabike box, which had been sent to me with a kids bike in. But that got to me ok - mind that was a different courier.
Very very annoying...
So keep your eyes peeled for a 2006 Orange 5 frame in Gun metal grey: