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').
In the Houston Texas metro area, roofing companies and contractors will charge anywhere from $195 â $295 per square to replace most roofs (this is for a standard 1-2 story with a roof pitch of 5/12 or less).his 100 square feet (sq. ft.) section of roof, in roofing terms, is equal to one roofing square (or 1 sq.). The measurement of your total roof surface area determines how many squares of roofing shingle area for the roof as well as the amount of roofing materials that will be needed to complete the job.