Try craigslist or a local piano mover. Local piano movers are often asked to haul off abandoned pianos and will resell them [1]. This company's stock at the moment is a bit pricey compared to what I usually see, but it's not unusual to be able to get even a baby grand for ~$1,000. The catch is you've got to pay to move them, which is a bit of an ordeal.

[1] e.g. https://www.actionpianomoving.com/used-pianos if you're in the greater NYC area

You are trying to get a working piano. This ad only required a non working piano.

Someone bought me a broken piano once thinking I would be able to repair it. We ended up letting someone else have it for free. It wasn’t expensive to begin with because it didn’t work.

I won't speculate on how hard the ad agency worked to source a low-cost piano.

But used pianos go unsold for under a hundred dollars all the time within an hour's drive of major US cities.

I feel like people have bought into the PR.

Everything in that press was a representation of a real and useful thing, and the people who hate this commercial the most seem to have substituted a real and useful thing for the simulation of one. Whereas the moment the cans on the piano were crushed, I thought, "wow that old (busted?) piano is holding up well."

Practical effects are not only full of fakery, they're also the origin of a lot of the tricks known to the world.