Casio FX-9750G+ Power Graphics Calculator was used for a year at a level, now im at uni i no longer need it, works perfectly, it is recommended by many colleges/sixth forms for maths and physics a levels.
£30 + postage (approx £2.50) BT preferred, but PP ok.
Will also consider trades of:
iPod dock cradle+remote (unofficial or official)
360 related items
Sat Nav unit
Am also happy to post first due to rating, however if you check ebay and AVForums i have positive feedback under the same username.