Final answer:
The customer could consider taking legal action against the broker for fraud or misrepresentation.
Step-by-step explanation:
If the customer believes that the broker intentionally deceived him, he may have grounds for a legal claim against the broker. One possible legal course of action is to sue the broker for fraud or misrepresentation. The customer would need to gather evidence to show that the broker made false statements about the lot's potential value and that the customer relied on these statements when making the purchase. It would also be important to consult with a lawyer who specializes in real estate law to evaluate the specific circumstances and advise on the best course of action.