I bought a domain at GD auctions for around $30. Few days later some guy contacted me saying how his client forgot to renew that domain and how they could pay me in $250 range (dont remember exact number).
That is when a light bulb turned on and I figured I can earn money reselling domains.
I actually bought domain for something else but ended up selling it.
Great first sale! Do you mind sharing the domain? Also, how did you initiate the contact with the real estate agent? I'm still trying to develop a good strategy with outbound sales. Thanks for sharing!