http://www.mypixmania.com/uk/uk/best-prices-digital-photos/?PHPSESSID=6476bdfa7bd92d3512ade4822d8e2e17
http://www.klick.co.uk/digi-compare.htm

klick offline: 3.99 for 40 @ 6x4 (i.e. 2 quid cheaper than online, next
day)