I bought a Canon Digital Ixus early in the New Year from Kamla Electronics in Tottenham Court Road (close to the YMCA) for £419. I also bought the case (at around £20 a bit expensive but it does hold spare batteries & CF cards), an additional 16mb card and another battery (essential - its very heavy on battery power), one or two other bits and pieces. The card and battery were heavily discounted because I bought it all at the same time. Have since added the mains lead for the camera (easier when downloading).
It took quite some time to get the initial camera set-up as I wanted it and to get the software loaded on the PC as the instruction books aren't the clearest - what happens on screen is not necessarily what's illustrated in the book.
I'm getting on pretty well with it now and am quite happy with my choice.