https://www.princessauto.com/en/120v-bench-mount-chainsaw-chain-sharpener/product/PA0008601577 ($170 + tax)
Like new condition; hasn't been used much.
I also have about 15 used Stihl chains (16" - for MS170/MS180 - see pic) that are ready to sharpen - $3 to $8 depending on wear - the $8 ones have never been sharpened.