Dressmaking, Sewing & Alterations Job - Sunninghill, GP, 2191

Need someone once a week/once every 2 weeks to assist with straight sewing and ironing of bulk garments, this would be skirts and simple jackets (roughly 50 items or so at a time)
Each item takes me roughly 15 minutes to sew to give you a rough idea. I am able to do the tasks but I do not have the time to do this. I am looking for quotes or estimates on this as it.