B&H Photo-Video offers the Wacom Bamboo Stylus Pen for iPad and iPhone in Black (pictured), model no. CS100K, for $10.95 with free shipping. That's the lowest total price we could find by $14. It features a 25% slimmer tip, satin textures, and purported pen-like performance.
Also available is the Wacom Bamboo Stylus Solo Pen in Blue, model no. CS100B, for $14.95 with free shipping. That's $15 off and another price low.