MONTGOMERY, Ala. (WSFA) -The yards are decorated, the candy is bought, and the costumes are ready for a night of trick or treating!. According to the National Retail Federation, total Halloween spending is expected to reach $11.6 Billion. That works out to about $104 per person on average for Halloween candy, décor, cards, and costumes. $3.8 billion of that is going to buy candy, another $3.8 billion will be spent on decorations, and $3.5 billion is expected to go towards costumes.