I've started thinking about this. Although I'd want some way -- for a reasonable upcharge -- of assuring that the hardware, particularly the camera, was in excellent condition.

Pixel 1's are below $300, I understand, and I'd be reasonably happy with one, except I believe their support window is about done. (Last Google phone with a headphone jack, to boot, IIRC. On the other hand, lesser storage capacity and no microSD support; microSD support is very nice, with my G5+.)