1. The problem asks us to determine the sales price per unit of our product or service based on market conditions. 2. We note that other hotels sell similar units for 18 pesos each. 3. Since our hotel uses better ingredients, we decide to price our product higher to reflect its superior quality. 4. We decide to charge 20 pesos per unit as our sales price, which is a reasonable premium over the 18 pesos market price. 5. Therefore, the sales price per 1 unit is 20 pesos. Final answer: Sales price per unit = 20 pesos.