KARACHI  : On the first day of week, US dollar traded at Rs 105.80 in cash free market without any change. According to the data provided by the Forex Association of Pakistan, the American dollar traded at lowest price of Rs 105.80 and highest price of Rs 105.85 in inter bank while it is traded at lowest price of Rs 105.60 and highest price of Rs 105.80 in cash free market.