-The measure of damage is the estimated loss directly and naturally resulting from the buyer's breach of contract. It is conveniently expressed by the formula - the difference between the contract price, that is, the amount of the obligation which the buyer failed to fulfill, and the market or current price, that is, the value of the goods which the seller has left upon his hands. (see Siuliong & Co. vs. Nanyo Shoji Kaisha, 42 Phil. 722 [1922]; Warner Barnes & Co. vs. Inza, 43 Phil. 505 [1922].) This follows the rule that damages comprehend not only the actual loss suffered but also unrealized profit. (Art. 2200.)