I bought a second hand Yamaha upright piano from a person who used it for 4 years. He said he also bought it from another person second handed. I guess this makes it third handed. There are like a tiny chip on the bottom of three piano keys and at the side there's a chip off(wood) about the size of half the ping pong ball. The piano(new) currently cost 3.8 thousand at a shop. So is it worth it?