This issue involves ethical and legal considerations. Before making a decision, please think about the following points： 1. Legal compliance: If this "ultra-low price" is a discount obtained through normal channels, it may be no problem. However, if insider trading, bribery, or other illegal means are involved, it may be illegal. 2. Conflict of interest: Consider whether this family member is in a conflict of interest position because of helping you. 3. Fairness: Think about whether this special treatment is unfair to other buyers. 4. Long-term impact: Consider the possible impact of this transaction on your relationship and reputation with your family. I suggest that before making a decision, make sure that the transaction is completely legal and transparent, and consider your own values. If you have any concerns, you can consult a legal professional for specific advice.