The next cheapest i can see is at play, £15 more expensive, although i may be wrong. I'm guessing it comes with a 1GB pro duo, as it mentions space for upto a thousand songs :)
"Feel the vibe come alive, whatever your taste in music. Storage for a thousand songs. Fast Web connection to download more.
Make calls, take pictures and videos, play and download music, even identify unknown tracks. Really, what more do you want?
Take mobile music a step further. This sleek, triple-purpose phone feels as if its come from the future to show you the way ahead.
3G is about more than just video calls. High-speed Internet makes downloads, video, email and messaging far more fun."