Motor for exoskeleton

I’m looking for high torque motors suitable for an exoskeleton.
Larger diameter motors work better.
Found this interesting one;

It’s only 800w though.
Has anyone found anything more powerful that’s not incredibly expensive? I want to use a low gear ratio - say only 6:1 - to allow back-driving for force feedback, and dynamic stability. (and fast moves!)

Try the 8318 size (or Turnigy 9235; same thing). They’re available from many suppliers, generally run around $100 and 2.5-3kW peak power.