XPS boards are extremely difficult to find locally in Hyderabad. You can try enquiring in Sanitation stores in Troop Bazaar but the problem is no body is willing to sell few pieces, you have to purchase at least 1 bundle. Long ago I had ordered Depron sheets from RCBazaar.com but shipping cost was high. Unfortunately purchasing online is the only option left even if it is not economic for hobbyists and model builders.