During the siege of Samaria, what sold for eighty shekels of silver?

Answer: A donkey's head

Ben-hadad's siege caused such a famine in Samaria that a donkey's head sold for eighty shekels of silver.

“Some time later, Ben-hadad king of Aram assembled his entire army and marched up to besiege Samaria. So there was a great famine in Samaria. Indeed, they besieged the city so long that a donkey’s head sold for eighty shekels of silver, and a quarter cab of dove’s dung sold for five shekels of silver.”— 2 Kings 6:24-25 (BSB)