Unfortunately the answer is “no”. Visitor travelling to Upper Mustang should buy minimum 10 days permit that cost USD 500 per head even though they are just doing one week trek. eg. It would cost just USD 350 for 7 days and USD 250 for 5 days trip if they provide per day basis permit. Trekking Agents Association of Nepal (TAAN) is trying to convince the government of Nepal to change the permit regulation so that people visiting Upper Mustang less than 10 days would be cheaper permit cost.