if i were you id get your orders in quick - its 60 quid for all 6 - and you know how quickly play steelbooks sell out.
a lot of people buy them up for resale on ebay (people who annoy me to be honest) and it just a tenner each, they wont have a problem shelling out 600 quid for 10 of each steelbook and cause them to shoot up in value.
also id say a lot of people who dont collect steelbook will buy the odd one, kick-ass will sell for sure.
my only issue now is do i sel my blurays of hulk, incredible hulk, hellboy 2 and casino - or just keep these sealed?
also im not sure which kick-ass steelbook id like to display more. decisions, decisions