OnSale-eCOST via eBay offers the 2nd-generation Apple AirPort Express 802.11n Wireless Base Station, model no. MC414LL/A, for $93.99 with free shipping. That's the lowest total price we could find by $3 (outside of the mention below) and the best price we've seen for a new, factory-sealed unit. (We saw an open-box unit for $6 less three days ago.) This device uses 802.11n to play iTunes over your wireless network to your home stereo, acts as a wireless router, and enables wireless USB printer sharing.

A close price: Fry's Electronics has it for $94 with free in-store pickup. (Shipping adds $5.99.) Sales tax is added where applicable.