World Wide Stereo via eBay offers the iHip Major League Baseball iDock for iPhone / iPod in 9 styles (New York Yankees pictured) for $22.99 with free shipping. That's the lowest total price we could find for any team by $10, outside of the mention below. It includes a wireless remote control, 3.5 mm cable, and requires four AAA batteries (not included).

Of note, World Wide Stereo via Buy.com offers the Boston Red Sox iDock for $22.64 with free shipping.