In fact it is not that far off, and accurate for uprights; 2,000 grand pianos / yr, 500 upright pianos / yr. Credit to: https://news.ycombinator.com/item?id=1

In fact it is not that far off, and accurate for uprights; 2,000 grand pianos / yr, 500 upright pianos / yr. Credit to: https://news.ycombinator.com/item?id=10147054 https://news.ycombinator.com/item?id=10147054