First of all I hope it's allowed to post sales offers here. I recently started to sell my RC gear and I'm offering my never used APM 2.6 which I bought last summer. The APM also comes with the u-blox GPS w/compass. The board and GPS are mint condition, as I never got around to assembling a plane for them :/. The board is this one.
If anyone's interested please send me a PM. I'd like to sell the kit for around $100, but I would be willing to negotiate prices.