I don't think you're guilty of anything for failing to honour an offer in most cases.
An offer is legally binding in that when someone acts based on that offer you can be liable for damages.
This does not force you to honor the original offer though.
Such offer is as legally binding as any tender. Of course a contract dispute could go either way.
An offer is legally binding in that when someone acts based on that offer you can be liable for damages.
This does not force you to honor the original offer though.