I had a similar issue with the seller. Committed to buying a Star Wars upright arcade game. When time came to pick up, already sold from under me.
Best thing to do is send a deposit with the seller so they don't back out. I wouldn't have posted negative feedback though. I think it's best to deal with a deposit
to lock it in.

Unfortunately, without a deposit, they could say the same about you. Pinball/Vid hobby is very flaky. No shows, not happy once they see the game. There's
hundreds of excuses. Deposit is honestly the best way.

Hey at least there's a bright side to the story. The game is gone and you have money in your pocket to fund another. There's always that silver lining in the
cloud. It's not the first and last game that didn't make it home. But there are others