I have already written a review for K750i .......sonys other cell !
check that out because there is no difference btween K750i and W800 except for a few things which I am writing here
Differences
Sony Ericsson is marketing this as a Walkman series cell phone
Obviously it has a Walkman logo on it.
It has a direct button on the keypad to start the music .....this button is at the side on K750i
The earphones provided are of higher quality as its a music phone
Color is different
It comes with a memory card of 512MB memory where as ull get 64MB card in box with k750i ....... so this is the basic difference ....... and the difference in cost is the cost of this extra memory they are including ............
obviously ....nothing comes free !!!
rest the product is excellent !!!