There's a saying that goes:
You get what you pay for.This is true to a degree because the money you pay gives budget to the manufacturers of the product meaning the more they charge for labor cost, the better they can pay their laborers and therefore have higher quality product.
Here's a table for you to get a perspective on how much difference there are in labor costs in a few cases.
|Source: U.S. Department of Labor. *From what I understand, Hourly Compensation includes the hourly pay, benefits, and social insurances.|