After a couple of crashes, I've had to rebuild this a few times. Also, since I'm new to this, I have a lot of the orders laying around. I searched and didn't find this as succinct, so I thought I'd post it.
This is a complete parts list with URLs and prices for a ground up build of an EasyStar with Ardupilot.
I'm a cheap bastard, so the list will generally reflect that.
It includes Tx/Rx, Motor, Battery with Ardupilot, sensors, shield, GPS and Xbee telemetry.