From the Olympus Certified Reconditioned sale section comes the lowest price I’ve seen on an E-M10 Mark II. These are reconditioned with a 90 day warranty. FWIW, my Mark I is 3 years old and was a refurb. Never given me a bit of trouble. Of course I picked up one of these at $299!!! Oh, and shipping is free.
In addition to these body only offerings, you can pick up one with with a kit lens for $130 more, or $429.