I've tried looking on GetItDaisy.com for comparison shopping.Are there any other sites like this one that shows all the used ones for sale?

Here is the one I've already found;
http://getitdaisy.com/webproto.aspx?whatkeyword=g35

$19

Try http://autotrader.com
or http://cars.com and check it out there.
If you want a G35 coupe, try not to spend more than $24k on one. You can get a pretty good one for $24k, unless you want the S, then it might be like $26k or so.

you can check out autotrader.com or carmax.

Try this website below. They have some of the lowest prices I've seen for most cars which I've searched for.

autos, kelly blue book, aol autos go to the used section and you can put in your zip and it gives you places to find it like dealers. w/the dealership address and phone number and everything its great and good choice on the car by the way l have an 08 g35 and l love it. Great car. Only problem l had was the radio would nt turn on but l got it fixed and that s it