You won't get points for things you return. I take that back...you will get the points when you buy the item, but you'll lose the points when you return it. E.g. I buy $1,000 worth of goods in month 1. I receive 1,000 points. Month 2, I buy $1,000 of goods and return $500 of goods from the first month's purchases. Net spending for month 2 = $500. I receive 500 points. Total points after the two months would be 1,500, not 2,000.