which one of the following expenses does a buyer not have to pay on completion of a transaction ?

1. Remuneration owed under the seller representation agreement

2. Harmonized Sales Tax on the remuneration payable and legal fees

3. Any deficiency between what the seller has agreed to pay the buyer's brokerage and the amount the buyer has agreed their brokerage is entitled to.

4. Remuneration owed under a buyer representation agreement.