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.
How much does a piano cost? A piano can cost anywhere from $3,000 to more than $100,000, depending on the brand, size and the age of the piano. A quality digital piano starts around $2,000. Upright pianos start around $3,000 and grand pianos start around $5,000 for quality used pianos. New piano price ranges are slightly higher.