IPv4 /24 Broker or no broker

Just looking for info. I know there are a lot of brokers, but is that a good (easy and quick) way to sell a /24 ? We're renumbering and plan to free up a /24. My boss is asking how much we could roughly expect to get for it, and the fastest/easiest way to 'sell' the block. It's a single /24, in the ARIN region (not part of a larger allocation). Suggestions? Tim