I've just replaced my parents' Tivo with the impending cessation of the Tivo service, and the fact that our area is being switched to HD in April. They are currently finishing off watching any recordings they have on it, but in a few week's time, they will be done with it. It's got an upgraded disc (can't recall how big I'm afraid), the original disc, the remote, and all the wiring and I think packaging.
I've been a huge fan of Tivo for years, and I'm very fond of the unit - I'd prefer not just to throw it away. If anyone here would like it, and are prepared to cover p&p (say £9?) then I'd be happy to send it to you when they've finished with it.
First come first served
Dan