Ebay offers Dickies FLEX Tough Max Regular Fit Straight Leg Twill Work Pants Black for $15.39 (reg $29.99) with free shipping.

Product Description:
Stay tough with Tough Max™ pants. The Tough Max™ technology adds ring spun fabrics for extra strength and comfort to keep you doing the job you need. Flex fabrics are a must for the movement that you need to work while providing a fabric that is two times stronger and longer lasting than all-cotton fabric. That means, it also provides excellent abrasion resistance and enhanced durability. Has a modern work fit and sits slightly below the waist. These performance stretch pants will help enhance your mobility to help you get the job done.Features

• Sits slightly below waist, traditional fit through seat & thigh
• 7.7 oz. twill, 68% cotton/30% polyester/2% Elastane-P (Lycra®)
• A twill work pant in our toughest Flex fabric for exceptional performance.
• Modern work fit
• Flex fabric for ease of movement and comfort
• Tough Max™ technology for exceptional performance
• Ring spun fabric for added strength and comfort
• Imported