Gonna stick my SP3i on eBay...reserve?

[Guest radiator]

As title suggests...I've just got hold of a K-Jam so I'll be selling my year old SP3i.

How much do you think it's worth? It's not in perfect condition - the screen has some very light scratches (which I'll probably polish out before selling), there are some tiny paint chips on both of the soft keys (on the corners), and the case has lost its 'texture' (I used to just keep the phone loose in my pocket) - the corners have actually gone shiney!

Will be sold with unopened CD (ie, Outlook hasn't been registered), and all other included accessories. The handsfree kit has been modified (replaced the original ear phones with some Sony Fontopia ones (see this))

Also, phone hasn't been registered with clue imate.

So, what reserve do you think I should use?