I have to mirrors from our remodel that are in great shape and could be reused.

$30 32 x 34 was trimmed and still has the bumpers on it. Bit of paint on the edges but easily hidden with a thin frame.

$20 22 x 40 small chip on the edge that can be hidden with a frame or trimmed down. There is construction adhesive on the back, but it comes off pretty easy with a head gun if needed.