You can rent and purchase second-hand climbing gear and apparel in Skardu but there is no market in Islamabad for this. Our guides will facilitate you throughout the process.
It is recommended to bring apparel or equipments with you. It is hard to find good quality equipments in Pakistan. There is a resale market in Skardu for second-hand climbing and trekking items but they are not very reliable. And the shortage of gears or apparel is common in peak season.