I have recently received from a lawyer a request to settle a legal dispute that I buy their clients' technology off them for over half a million dollars. I asked due diligence questions about the technology offered and they said I should buy it as they have no need to discuss further. Upon a chance meeting with another party I discovered that they had trialed the technology they are trying to sell to me (to settle the law suit) and it did not work. It has now become evident that the lawyer representing them in this knows this fact as well. Can they do this, and what would you recommend as a course of action under commercial law? Thank you in advance.