Nice leather office desk chair - $40 (Capitol Hill / H Street)

Blue faux-leather office chair, has received light use.
All wheels / arms work.
The equivalent is currently for sale new on Amazon for $250.
https://www.
amazon.
com/gp/product/B073NS94XQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 There's a small, penny-sized mild discoloration on the seat (see picture).
I'm not sure how that happened, but suspect it could be solved with a little elbow grease.