Arm's length price governs valuation and profit determination for specified domestic transactions, replacing open market reference where applicable. Amendment to section 80-IA makes three operative changes: it extends the terminal date in sub section (4)(iv); substitutes an Explanation in sub section (8) defining market value as either open market price or the arm's length price where the transfer is a specified domestic transaction; and inserts a proviso in sub section (10) requiring profits from specified domestic transactions to be determined with regard to the arm's length price.