>>4336134Canon R50, the APS-C camera on the mount that Canon abandoned APS-C for? Sure, you can buy full frame lenses, but OP asked for cheap.
They JUST opened up RF to third party to fill in the gap of APS-C but it'll take a while for that to filter into the used market with depreciation.
Also, Canon tiers the fuck out of their cameras. They're cheap because Canon makes a great introductory camera because newbs don't know what they'll eventually need/want or not. Then in a year or two, you realize the camera, despite its great sensor, is really lacking in some important ways for you. Then their non-intro cameras are... not cheap. At all. But you've probably already invested in a set of Canon lenses, so it's either start over, or pony up the money poor boy.
Panasonic is the complete opposite -- they'll even backport features into the firmware of old cameras if the old tech is capable of it.
The G9 is packed with features -- one of the best IBIS of 2017, good video, high-res mode, weather sealing, etc.
And the lens selection is great and cheap. 12-32mm is $130 used. 45-150mm is $120 used. These two lenses will give you a compact daily setup, and at the same time spread a focal length great for your first year or two of photography. Then when you're ready, get the Panny-Leica lenses for pro-quality glass.
That one G9 camera will scale well from newb's first day doing photography, to actual pro.
That R50 will scale well from... vlogging to... vlogging lmfao. Hope OP is ready to shell out another $1500 in 18 months when he eventually needs to upgrade.