I have a good copy of the Bower (same as Samyang) 24mm F1.4 lens in Canon EF mount. Its in excellent condition with a cap.
New these are around $795 and there is a fair bit of variability of copies. Mine is a good one so you can be assured.
Its a very good nightscape lens useable wide open with a bit of chromatic aberration slider in Lightroom or Photoshop.
https://pbase.com/gregbradley/image/168646076/large
$495 including postage in Oz.
Greg.