Walk into any supermarket and you can usually buy a banana for less than $1. But a banana duct-taped to a wall?

The conceptual artwork has an estimated value of between $1 million and $1.5 million at Sotheby's auction on Nov. 20.

Maurizio Cattelan's artwork Comedian, a banana duct-taped to a wall, is expected to fetch $1 million to $1.5 million at a ...

The 25 works offered up by Heritage Auctions on Friday are among over 300 from the Boy Scouts that will be sold at auction ...