Harry saw an advertisement for an apartment for sale "off the plan" with "massive stamp duty savings".

Harry saw an advertisement for an apartment for sale "off 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