Woot offers Apple Watch Band - Sport Band (41mm) - Regular (MKU83AM/A) for $14.99 (reg. $49) free shipping with Prime. 

Product Description:
Made from a custom high-performance fluoroelastomer, the Sport Band is durable and strong, yet surprisingly soft. The smooth, dense material drapes elegantly across your wrist and feels comfortable next to your skin. An innovative pin-and-tuck closure ensures a clean fit.
 

• Made from a custom high-performance fluoroelastomer, the Sport Band is durable and strong, yet surprisingly soft
• The smooth, dense material drapes elegantly across your wrist and feels comfortable next to your skin
• An innovative pin-and-tuck closure ensures a clean fit
• Apple Watch Sport Band includes 3 straps that can be configured for either S/M or M/L length.
• Regular Bands fits 130–200mm wrists and are compatible with 38mm, 40mm and 41mm Apple Watch Models