i find kellko totally useless, as it dosent seem to take into account special offers that places are having ... i fiind just trudging round the shops, or better still visiting online shops (ie amazon, argos, currys, commet, tesco) better for spotting bargains
smurfchops try this website http://www.find-games.co.uk/ this will give you the cheapest based on a large number of websites and will also include special offers (there is also a site for DVDs & CDs - www.find-DVD.co.uk