Thanks Owl, I didn't get a regsitration email at home last night so I regsitered again at work today, maybe I did something wrong at home, so will need to wait for the work discount code to come through.
I did realise the code was only for one item, but I figured at that price I would get the set of 4 of one of the shapes as it works out so cheap. I think Gadget Monkey has them all so she might be worth a PM.