park.io user tedoshman has been killing it this year - he has been emailing me all of the domain flips he has made, and they have all done really well. Most recently he sold the domain data.ly, which he got on park.io for just $2,125 on Aug 27th 2017. He just sold it for $10,000 - which is nearly 5 times what he paid for it only three weeks ago.
Congrats tedoshman!