Newegg has the Tivo series 2 80 hour recorder for sale for $170. There is a $170 MIR so all said and done it is free.
This is the same unit I have. You will need an ethernet adapter to hook it up to your broadband if you want to take advantage of those features, otherwise just need a telephone line to get the programming guides. Also, don't forget you will need a subscription. But, if you are itching to get a tivo but don't want to spend an arm and a leg for the newer ones, can't argue with free.
Note also this is strictly analog so the picture quality isn't that great on it, but everything it does makes up for it imho.
http://www.newegg.com/Product/Produc...82E16882610004