Remedies if broker sold property at higher rate

I request you to kindly let me know if anything can be done if a broker sold us a property at a price higher than what it should have been sold at. A little high price of a few thousand is still understandable in the name of profit but what about lakhs? Just because there was no one with us he took an undue advantage of the opportunity and sold us a property of 14 Lacs at 16.25 Lacs. We realized this a few years later when the neighbourhood people told us that we got cheated by the broker.