Cool, I've been looking at the brushless gimbals and $75 is a good price based on my research. The brushless setup is something I want to do but for now I'm experimenting with my own homebrew servo based gimbal that uses the gyros on the KK2.1 board. I only have one servo now (the snow delayed the arrival of another) but have the roll axis trimmed pretty well. I was impressed at how easy it was to trim it out, basically plug it in, go into 'camera stab' settings on the KK and up the gains and offsets until it levels out with throttle on. I know the servo gimbals are not as smooth as the brushless and are essentially old technology, but I need to stop the wallet hemorrhaging and had a servo lying around from another robotics project.
Unfortunately, I won't be flying anytime soon, we got another 14" last night. So, it may be a really bad winter for flying quads, but it is a really great winter for backcountry skiing. I skipped out of work yesterday after noon and got in a 2 hour jaunt up and down a local mountain during the height of the storm. Skiing will probably trump all quadcopter activities over the weekend, but I'll post what I have of the gimbal setup at some point.
-matt