Hi, had to comment on this. Half of QAR 341 is QAR 170.50. Half price of QAR 200 is QAR 100. The promo was spend 200 and get 100 back "to spend" and not deducted from your bill.,Which makes the total cost as QAR 300 for merchandise worth QAR 400. Half price is your gross bill deducted by 50% and not your net bill. In this offer your half price is on the net and not the gross which is why you make less than 50%.