The term 'cash in, as coupons' can be summarized as redeeming coupons for money or other rewards. This is a common practice among shoppers who use coupons to save money on their purchases. By redeeming coupons, shoppers can get discounts on items they would normally have to pay full price for. The crossword solution for this term is 'REDEEM, ' which is a verb meaning to exchange something for money or other rewards.