Causes. In ALS, the nerve cells that control the movement of your muscles gradually die, so your muscles progressively weaken and begin to waste away. ALS is inherited in 5 to 10 percent of cases. The other cases appear to occur randomly.
1 The smaller studio uprights usually weigh between 400 and 600 pounds. 2  The monstrous full vertical or large upright piano can weigh as much as half a ton.  A studio piano's center of gravity is also lower than a large upright's, as it is about 4 feet (1.2 m) tall as opposed to a large upright's roughly 5-foot height.
New grand pianos can cost from $10,000-$150,000, while upright pianos have a smaller price range at $2000-$8500. Used piano prices stay about the same for horizontal pianos, but good vertical pianos are sometimes seen on sale for $500-$2500. Grand pianos range from 4'5-10' in length, and 4'-7' ft. in width.