A manual for a special edition of ClayFighter on the Nintendo 64 sold for $1,377 on eBay today, according to eBay user ch3ncho's auction listing.
The manual was created for ClayFighter: Sculptor's Cut, a special edition of Interplay Entertainment's malleable fighting game ClayFighter 63⅓, which was exclusive to Blockbuster Video in the U.S. That version, which a 1998 article from IGN capped at 20,000 manufactured copies, included additional fighters High Five, Lady Liberty, Lockjaw Pooch and the Zappa Yow Yow Boyz, as well as combos, special moves and more. The manual was listed in "Like New" condition, and another auction for a similarly worn manual ended with a bid of $1,125 in late April.
You can check out the intro for ClayFighter: Sculptor's Cut above, courtesy of YouTube user Ren TimH. A recent auction for the N64 game and its case fetched $404.69.