The Human Slinky (©Veniamin's Human Slinky/All Rights Reserved)

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Cost: $100,000
Go ahead, read that price tag again. No, no, we'll wait. Let that really sink in. The Human Slinky may not be the average costume for your Halloween party-goer, but it would certainly be the most ambitious. Where a pricey Elvis outfit could lead to some part-time work on the side, the Human Slinky would pretty much dictate the need to get another job. For a stiff hundred grand, you not only get the costume, but the rights to "perform this act on stage (for one year) around the World." Bid on the Human Slinky here.

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