If the appraised price doesn't seem justified, ask for a second appraisal by a different appraiser (though you or your agent may have to pay for it).

WSJ: Pressured to Cut the Price--WSJ House Talk

"We did not pay an agent when Benjani joined from Auxerre, and his transfer to Manchester City was approved at the time by the Premier League and the FA's compliance unit, " it said.

BBC: Pompey charged over Benjani moves