Someone dropped $2,300 on this recreation of Star Wars' 4-LOM droid costume.
The winning bid on this Spider-Man costume was a cool $2,500.
This Batman costume also went for $2,500.
The pieces for this costume, for Star Wars' Darth Malgus character, cost the highest bidder $2,500.
An Iron Man fan paid $2,799 for this costume on eBay.
And someone paid $2,999 for this Superman costume.
This vintage Playboy bunny costume from the 1970s cost the highest bidder $3,000.
And this Hercules costume sold for $3,050 on eBay.
This intense Robocop costume went for $3,550, the second most that's been spent for a Halloween costume on eBay.
The most expensive Halloween costume bought on eBay was this replica Iron Man suit, which was eventually purchased for $4,999.
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