By dividing the gross profit by the gross income, you derive this gross profit margin. As an example, if your business grossed $20,000 in income with $15,000 in sales expenses, subtracting $15,000 from $20,000 gives you a gross profit of $5,000.Dividing $5,000 by $20,000 calculates a 0.25 gross profit margin.y dividing the gross profit by the gross income, you derive this gross profit margin. As an example, if your business grossed $20,000 in income with $15,000 in sales expenses, subtracting $15,000 from $20,000 gives you a gross profit of $5,000. Dividing $5,000 by $20,000 calculates a 0.25 gross profit margin.
Typical costs: 1  Stone countertops, including granite, other natural stone and quartz resin (engineered stone) cost $4-$150 per square foot, or $120-$4,500 for a typical 30 square foot kitchen countertop. 2  Laminate countertops cost $7-$30 per square foot, or $210-$900 for a typical kitchen.
Stainless Steel Countertop Prices. For a modern, clean, low-maintenance, efficient look, nothing tops stainless steel. Itâs a top choice for gourmets who need kitchen countertops that are fit for their passion. Stainless steel countertops: $30 to $90 per square foot. Solid Surface Counter Prices. Tough acrylic is the basis for these innovative and durable countertops. Corian and Swanstone are leading brands and offer the most colors and patterns, many of which are modeled on the patterns found in granite or marble.