At Fun Run 101, our goal is to provide you with quality shirts at a minimal cost. However, cotton is a commodity and as the market price for cotton fluctuates, so does the cost of a shirt. The cost of cotton has increased steadily over the last year (see below) and as a result, the cost of shirts has increased to $3.97 each. We will continue to peg our price to reflect the market (up or down) in order to bring you the best pricing possible.