A 2 axis autopilot with servos for under 1 AMU.
http://www.trutrakap.com/product/eco/
http://www.trutrakap.com/product/eco/
To elaborate on this ECO situation, TruTrak is sending these out the door only for designs they've put together a "kit" for. As of my last communication with Lucas at TT, two or three weeks ago, only two planes have been worked with at this point, the RV-4 and RV-10. And even though these were supposed to start shipping last September, not one ECO has been shipped. I've got my name on the list but at the rate things are going, especially since I don't have an RV, I'm not expecting any good news anytime soon re the ECO. That's okay though. For a thousand bucks two-servo autopilots are showing up here and there as people upgrade to newer systems. I really like the simplicity of the ECO, but oh well.