For a definitive answer, you have to have the contract reviewed by some lawyer; the language of a contract is all-important in determining rights, obligations, etc. under it, since the specific terms of that contract control its interpretation and enforecability.That said, as a general principal, IF the specific rate and/or other financing terms are incorporated into the contract of sale, there is a good chance that if those rates, etc. are not provided, that would consitute a material (or important) breach of contract terms and allow the seller to terminate the contract without penalty. It would be similar to the seller trying to change the base price of the vehicle, as reflected in the contract, after contract signing.If the rate and other terms are not part of the contract of sale itself, then there probably is no breach of the sale contract by a failure to provide the hoped-for rates, and the contract would be binding on the buyer.