(1) A contract of sale of goods is a contract whereby the seller transfers or agrees to transfer the property in goods to the buyer for a money consideration, called the price. There may be a contract of sale between one part owner and another.
(2) A contract of sale may be absolute or conditional.
(3) Where under a contract of sale the property in the goods is transferred from the seller to the buyer the contract is called a sale; but where the transfer of the property in the goods is to take place at a future time or subject to some condition thereafter to be fulfilled the contract is called an agreement to sell.
(4) An agreement to sell becomes a sale when the time elapses or the conditions are fulfilled subject to which the property in the goods is to be transferred.