Something similar happened to me once; however, it was divine providence and I ended up with a much better piano. I think the same will be the case with you, hopefully.
I saw a D.H. Baldwin (5’8”) baby grand on CL for $3000 advertised as a “divorce sale” (first red flag). It was located about 20 miles away and within my “space” so to speak, without venturing too far away from home. I called the guy the same day the ad was listed and scheduled a time to go look at it.
When I arrived a few minutes early, no one was at home (second red flag). I waited about 30 minutes and the guy finally shows up, along with his soon to be x-wife and kids. The house was nice and roomy and in a nice subdivision. The guy introduces himself, and apologizes for being late. When I go inside, there is no furniture to speak of in the house, and just a few pictures remaining on the wall; the piano was in a large great room all by itself. I sat down and played it a little, and decided right away that I wanted the piano (which would have been my first grand).
I did not even try to negotiate a lower price. I figured the asking price of $3000 was about right, and maybe even a bargain. Of course, I didn’t know as much about pianos then as I know now, such as the fact that a D. H. Baldwin ain’t no real Baldwin (excuse the double negative

). It was likely made by Samick… still, not a bad piano.
To make a long story short, this was on a late Saturday afternoon and I had not had time to go by the bank and get cash. I did call a local mover and got a tentative day to move the piano later that week, in the event I bought it. I offered to write the seller a personal check for the $3000 asking price, or I could offer him $100 cash earnest money to hold the piano until the movers could get there and pay the balance in person before the movers touched the piano. The seller agreed to accept the $100 earnest money and wrote me a bill of sale. I was thrilled and excited at the prospect of owning a baby grand piano for the first time!
The next day, Sunday, late in the evening, the guy calls and says his soon to be x-wife is having some issues with him selling the piano and said he would have to return my earnest money and cancel the sale. I told him that I did not want to get involved with any problems between him and his soon-to-be X and said I would be by to pick up my $100 the next day; went back by the house, and there was an envelope taped to the door with my $100 inside and a note saying "sorry".
About a week later, I saw the same piano advertised on CL again for $4500. Guess they resolved the issues about selling the piano.
Good luck with your predicament.
Rick