Nice article, here is the interesting point
"Around the 1960s this 'jewel craze' reached ridiculous heights, and manufacturers made watches with 41, 53, 75, or even 100 jewels. Most of these additional jewels were
totally nonfunctional; they never contacted moving parts, and were included just to increase the jewel count.
So more jewels do not mean the more expensive the watch should be, just to increase the sale of jewels only