I have a Logitech T650 Wireless TouchPad for sale in original box. Just over 15 months old, so plenty of time left on its 3 year warranty. Used for 3 weeks total when Win8 was new as it is designed to work beautifully with Windows Gestures. Having the multi-touch experience at mu fingertips without having to reach out to the screen on my desk was very cool, but using it day to day just doesn't suit me. Lithium batteries don't mind sitting idle so it should be about good as new.
CNET Video Review:
Works just fine on Win7 of course as a regular trackpad.
$50 including tracked non-signature shipping (add $5 for signature-required shipping). Invoice available on request.