Selling my Canon EOS 20D, but for how much?

I have Canon ESO 20d I want to sell. I just upgraded to a Nikon D7000. I have no idea how much it would be worth?
Eos 20D Body, Canon 18-55mm lens, Canon 70-300 USM lens, 2x (working well) batteries, charger, 4gb memory card, basic bag, all manuals and cables.
The 70-300 lens as some broken plastic on the front where the lens cover clips on. The lens itself is fine.
Any recommendations of what I should be asking for? (family member is interested)

I'm not that knowledgeable in that department as I have only a cheap digital camera but I recommend checking out ebay to see about the prices they are asking for on there

I just checked the KEH website:

20D is selling for $225 USD with battery and charger.

18-55 mm, $65 USD

Adorama has a used 70-300 mm listed for $409 USD

This should give you a basis.

4 GB CF cards are very inexpensive now, about $9 new USD

Nice camera the D7000

Anywhere from $225-275 is good