Acoustic pianos are a different story. Because acoustic pianos are made of wood, steel, and wool, a qualified piano technician can repair any acoustic pianos regardless of the brand. There are also piano rebuilders who take old pianos and make them like new again though quite expensive. Generally speaking, you will find better deals in used pianos than new pianos. New pianos, like new cars, tend to lose their values more sharply in the first few years.
The challenge of buying a used piano is to evaluate the piano and know what to avoid. I will address the tips for buying a used piano in the next question.
This is one of the articles in a series called “Piano Buying Guide for Parents of Young Students“. You can find other articles of the series through this link.