Look good for the price. Similar sort of thing to the Hunts (the anti bite guard on the rear hub looks the same; it broke off mine).
You probably won't find them quite stiff enough and you'll wish they had four more spokes per wheel if you're heavy-ish. I'd get them for that price though.
I'm fairly light (sub 75kg) & as you say look very similar to the spec of the 4Seasons. Might give 'em a punt - definitely an upgrade on the 2kg+ mavics I've got at the moment.
Any thoughts? They are pretty light for the spends...
http://www.wiggle.co.uk/prime-pro-disc-road-wheelset-black-91011-speed-shimano/