IN the case of the video linked it is a one man shop, in Oakland CA USA. 20$ in material is probably right on the money. other costs are probably 20$ (power, eq

IN the case of the video linked it is a one man shop, in Oakland CA USA. 20$ in material is probably right on the money. other costs are probably 20$ (power, equipment upkeep)... The rest is pay for himself. It probably takes 6-10 hours to build a pair of jeans at the level he is doing it at, and that leaves him making a reasonable hourly rate