If you've got some Canon lenses and are interested in sampling the EOS M, Canon has refurbished EOS M5 cameras with a refurbished EF-EOS M adapter (plus some additional gifts) for US$637. You have to enter the discount code TREATPLEASE at checkout to get this price.
This is a pretty exceptional price for a very good APS-C mirrorless camera body. The normal refurb price would be US$784. I also like that Canon includes a one-year warranty on their refurbs, unlike some other companies.
Note that Canon also is honoring the 15% off TREATPLEASE coupon on their lens refurbishments.