I would highly recommend checking ebay.

I bought my M7II with 65mm lens for $1300. And I just bought a 50mm lens with finder/box/manual for $825 including shipping. This is much cheaper than KEH or MPEX.

Just know what you are buying and ask these questions:
- how much to buy right now?
- will you include shipping in the final price?

This works for me a lot.