Score Angel Soft bath tissue for just $1.55 at Walmart! Use a $0.45 coupon on a four-pack that costs $2.00. The new price equals $0.01 per square feet.

Why should you always calculate the price per square foot?

Use one $0.45/1 Angel Soft Bath Tissue (angelsoft.com)

Final Price: $1.55, or $0.39 per roll, or $0.01 sq ft