A company normally sells its product for $20 per unit. However, the selling price has fallen to $15 per unit. This company's current inventory consists of 200 units purchased at $16 per unit. Replacement cost has now fallen to $13 per unit.
Install Roof Shingles Cost. Typical cost to have roofing shingles installed in San Antonio, TX is around $80 - $100 (per square, asphalt). Roof Replacement Cost. Typical cost to have roofing replaced in San Antonio, TX is around $5,760 (24'x45').
HomeAdvisor's Cost Guide says the average national price of a roof installation for most Americans ranges from $5,913 to $7,853. At the high end, people pay as much as $12,000; at the low end, they may pay as little as $3,000.