I have a very clean 800 mhz G4 ibook, new battery, charger, OS 10.4, loaded with MacGPS Pro software. Also included is a Magellan Explorist 210 with USB cable and the MacTops 100k USGS topo set for the US on DVD. All together this makes a very capable and flexible navigation system. You can buy 24k USGS complete state disks or download individual maps for free. You can also scan your own maps and calibrate them for use with the GPS.
http://www.macgpspro.com/?gclid=COnU1fbaqKwCFQUaQgodTG1DDA
$200 shipped in the US.
http://www.macgpspro.com/?gclid=COnU1fbaqKwCFQUaQgodTG1DDA
$200 shipped in the US.