If they were mine, I'd give you one of the three pianos my aunt has. Playable, but really old, cranky and out of tune. I practice on one of them; that's how I've been holding on these past few months.
I would think you would have a good chance. I'm sure there are people that have an old piano they would not be able to sell, but if the opportunity arose, they would give it away.
Fine with me being out of tune. I just need the extra keys and the pedals. And the heavy action.
Yes, I hear of free pianos going begging all the time. Delivery will cost a little, unless you have some strong friends, a piano trolley, and the use of a delivery vehicle for a few hours. And I would be tempted to spend a little money on basic piano tuning/repairing tools and a book on how to use them!
Problem is, I don't know where to buy one.
Right now, I'm already considering to buy a basic piano tuning kit and a manual. Problem is, I don't know where to buy one. So do the movers.