I bought a ten-year-old Yamaha digital piano, model Clavinova CLP-511, a few days ago. I paid $249. Before making the decision, I did some research. Yamaha discontinued this model in 1998. The list price then was $2499. The owner probably paid around $2000 for it.
If the owner had bought an acoustic piano then, the $2000 would have gotten him a cheapest piano in the showroom, a shinny-black 42’ console, made in China or South Korea. How does a 10-yr old, no-name, shinny black console worth today? I would not be surprised to see people asking for $2000 or more on Craigslist. You are going to see phrases “rarely played”, “like new” in the AD. If you get the price down to around $1500, you get a great deal.
I do not against having digital piano. With the new addition, I own two now. Of course, I have acoustic pianos as well. However, just like buying a house, getting the cheapest may not be the best deal. Resale value has to be included into consideration.
To 黎程程, Lily3 and others who were asking for recommendation on particular models: Since I was on the market for one, I talked with a friend of mine, who owns an authorized service for many major brands. His recommendation was: If new: Yamaha P-140, street price $1000, then you have to buy a stand, a bench and pedal for it. His recommendation on used is Yamaha P-80. He recommended them highly on the touch, sound, and value of those instruments. BTW, he plays, composes on those instruments, and most important, he makes a living on serving them. I trust his opinion.
One last thing: Frequently, I see people here think “touch sensitive” and “weight keys” are the same thing. They are not. I may come back later to explain, or you may do some research to find the right answer.
Good day.