average cost to make a jacket
1 The average price of adjusting the shoulders of a coat or a jacket is at $30 to $50. 2  Adjusting the hem runs at $15 to $20 while shortening the sleeves with or without buttons can cost $35 to $45.3  Shortening the length of the coat costs around $40 to $45. While all of these are factors in determining the cost of alterations, each tailor determines his own prices, and therefore the price will vary from one shop to the next. 2  The average price of adjusting the shoulders of a coat or a jacket is at $30 to $50.