Zimmerman claims he was selling the gun he used to kill Trayvon Martin in 2012 at a condo complex in Sanford.
Denny Honeycutt, owner of Froggy's Saloon on Main Street, told the newspaper he was supposed to meet Zimmerman at noon Friday to give him a check for $150,000.
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He said Zimmerman canceled on him at the last minute, claiming another bid came in with income verification. Zimmerman said that bid was for $250,000.
Honeycutt told the newspaper he sent one last text message to Zimmerman, asking him of the buyer planned to destroy the gun. No word if he got a response.
Zimmerman was found not guilty of murdering Martin in 2013.