If the purchase is exercised in full ten percent of the price of a unit already. And the purchaser agree that the Seller is unable to perform the contract further. The Purchaser has the right to terminate the agreement.
If people are buying all rights have been used in ten percent of the price of the suite, and who will buy that seller may not comply with the contract. People are entitled to purchase the contract cancellation.
If the user has rights to purchase the ten percent of the price, the unit, and the user will see that the purchase will be sold may not comply with the contract, the Buyer shall have the right to terminate a contract.