I’ve got the 6x reduction planetary gearsets back in stock at mjbots.com, now combined into a single product listing for only a little more than the old ring gear — $25 for the whole set! Compare that to the $41 you needed for an entire gearset before!
In my quest to create a more dynamic quadruped, I’ve started accumulating a lot of parts from bulk buys that could be reasonably useful to other hobbyists and experimenters. To maybe make life easier for everyone, I’ve started up what may be the worlds ugliest online shop where you can buy some of these components. For now, I have some bearings and custom gears that are useful when building servos for dynamic robots.
Check it out! https://shop.mjbots.com
Unfortunately US shipping only for now, email me or DM on discord to arrange something internationally.
Some samples of what I have online now:
M0.5 100 Tooth Steel Ring Gear
M0.5 20 Tooth Sun Gear
6708-2RS ABEC-1 Bearing 40x50x6mm