First pattern typically costs $90. Grading to all sizes $25 per size.
First sample cut and sew averages $125, including most washes.
Production sewing cost vary from $18.74 to $28.33 depending on quantity and operation count.
Production washing cost vary from $6.40 to $28.80 depending on quantity, hand work, operation count and wash cycles.
Production fabric cost vary from $5.50 to $8.90 per yard depending on quantity and fabric availability. Fabric yield per garment average 1.55 yards per unit on women's to 1.7 yards per unit on men's. Fabric width on selvage goods (31 inches) creates a larger usage (around 3 yards).
I have been doing this for 34 years and will be happy to help you understand any aspect of the process. If you really want to be in the denim business, it requires an investment. you will need to have $5,000 that it won't kill you to lose to try and get a full blown denim sample line. By the time you add and delete styles and make salesman samples and possibly small production runs, plus buy logo trim ...etc. But call me anytime to discuss 915 373 6693. Good Luck!