For Sale or Swap Sites

Sidney
In my area, I don't do a lot of shopping on for sale or swap sites, but my parents want a swing for their home for when our little guy gets here, so I took to for sale or swap in my area to find a gently used swing. I found the same swing that we bought but a model older, and was pretty pumped that I found a good one that was still in the box, no less! I messaged the seller asking her if it was still available. I got the following message in return:
"It is, but I prefer not to sell it to you, because I know how black people treat things" 
😳 b****, what? 
Excuse me, but how do you know how I treat things? I treat things with utmost respect because I like them to last a long time! 
I guess I'm just frustrated because it caught me so off guard. I had no idea that would come from someone I was offering to BUY SOMETHING FOR. On top of that, how f****** rude. I have never met the woman, I don't know anything about her and she doesn't know anything about me. Nothing in my past has EVER indicated otherwise. I was hurt by those words...