The dude who owned it was kind of a douche to start with, as I recall. That being said, I think I'd be hard-pressed not to sell something I started as a hobby that grew and grew.

Speaking of which, I created my own site[1] within the past couple of years...have a few friends feeding data. I set them up with Pi's, antennas, cords and the proper software. Would be super stoked if anyone else wanted to feed me!

[1]https://radar.airport-frequencies.com

Hit me up if you want to join!