This year National Retail Federation believe that American will spend around six dollars more this year on halloween then last year. Last year it was estimated that we spent around 67 dollars on Halloween, making this years pricing around 73 dollars. This 73 dollars should cover costume, candy, and decorations for this holiday. From 2005 to 2011 the prices have gone up by 28 dollars. With Christmas (winter) coming in 1st with America's most retail spending being at 457.4 billion dollars , Halloween comes in 6th being at 5 billion dollars a year.