Newegg offers the TP-LINK 802.11n Wireless 4-Port N300 Broadband Router, model no. TL-WR841ND, for $28.22. Coupon code "EMCWHGP56" cuts it to $17.99. With free shipping, that's the lowest total price we could find by $2, although we saw it for $3 less three weeks ago. It features two detachable antennas.