[SwiftDeath]

Here's a couple buy it nows on ebay.co.uk

A decent joker copy

A decent Penguin copy

Only Two-face I could find

There's also some auctions as well

http://www.ebay.co.uk/itm/BATMAN-ARK...item35c3b94e80

http://www.ebay.co.uk/itm/Batman-Ark...item4d08e89c66

Finally some really cheap used ones on Amazon.co.uk

http://www.amazon.co.uk/gp/offer-lis...d=&seller=&sr=

Would have to ask each seller about conditon of steelbook and cover variant of course