Harry saw an advertisement tor an apartment tor sale \"ott the plan\" with \"massive stamp duty savings\". On Saturday Harry signed a Section 32 disclosure statement and a contract of sale, and paid 5% deposit. On Wednesday following, Harry appointed you as his conveyancer. Special Condition 100 of the contract required Harry to pay \"up to 10% of additional construction costs if the construction was over the building budget.\" The budget was not disclosed. Harry, dismayed, wished he had never signed. Advise