Answer: Bill's offer is ethical and legal and he can accept compensation for handling the escrow.
Explanation:
An exclusive listing refers to the type of real estate listing agreement whereby a broker is chosen as the sole agent of the seller. It should be noted that the right to retain the property is held by the seller rand has no obligation to the broker.
Based on the information given, it can be infered that Bill's offer is ethical and legal and he can accept compensation for handling the escrow.