Play.com have the cheapest price for Spider-man 3 on DVD that I can find, plus it comes with a Play.com Exclusive Personalised Movie Poster!
Don't forget quidco too!
Also got Pirates Of Caribbean 3(2 Disc) Only £9.99
Pre-order Spiderman 3 on DVD for your unique offer code which will be e-mailed to you within a few days of placing your order. Then visit the website http://www.sphe-newsletter.co.uk/publicity/sm3/play
and enter your code to be able to design your very own Spiderman 3 personalised poster. Your poster will be sent to you once the DVD is available for delivery. You will be entitled to one free poster for every DVD you pre-order. This offer ends at midnight before release (14/10/07) and is exclusive to Play.com