Labor Day weekend has become one of the biggest shopping events of late summer, with retailers covering websites and stores in eye-catching markdowns. But a giant “40% off” sign does not automatically mean you are getting a bargain. Retail pricing can be complicated, and the percentage discount matters far less than the final price you actually pay. Consumer Reports has repeatedly advised shoppers to compare prices rather than relying on a retailer’s advertised “original” or reference price. Before jumping into a Labor Day sale, knowing which promotions deserve extra scrutiny could keep more money in your wallet.