Everybody refers "halloween shop" or "halloween store" when buying costumes / mask.
The traffic stats need a bit of work, but someone who is serious about SEO can utilize this aged domain that consists of highly targeted keyword to build incredible stats.
People type-in this domain name all the time, especially during halloween.
The most obvious is a online store, also think about the possibility of renting costumes VS selling them.. Physical halloween stores could utilize this domain name to cater to their online audience.