Just a quick heads up for some of my modern clan! Toyrus have reduced this beast to £74.99 with free delivery if you use the code 9908087559996. These are still in forbidden planet for £150 and all the 1's on ebay are well over £100.
http://www.toysrus.co.uk/Toys-R-Us/Toys/Action-Figures-and-Playsets/Star-Wars-Vintage-ATAT(0098530)?searchPosition=2
http://www.toysrus.co.uk/Toys-R-Us/Toys/Action-Figures-and-Playsets/Star-Wars-Vintage-ATAT(0098530)?searchPosition=2