This is not going to be terribly helpful because I clicked on a link to symantec from a PC magazine review section & I can't remember which one it was 
anyway when I landed at the Norton page, for the usual 3-user deal on Norton Internet Security 2012 it showed £24.99 instead of £49.99 - it didn't say that on the link
so if anyone was about to get it anyway, have a rummage round the magazine websites & follow all their links!
(Norton gets very good reviews)