A more thorough explanation:

Definition: Hallage is a fee or toll that was paid in the past for goods or merchandise sold in a hall used as a market. It was also a toll payable to the lord of a fair or market for commodities sold in the common hall.

Example: In medieval times, merchants had to pay hallage to sell their goods in the market hall. For example, if a merchant sold a bag of wheat in the market hall, they would have to pay a fee to the lord of the fair or market.

Explanation: The example illustrates how hallage was a fee or toll that was paid by merchants for selling their goods in a market hall. It was a way for the lord of the fair or market to make money from the merchants who used the common hall to sell their commodities.