Best Buy offers Apple’s AirPort Express Dual-Band 802.11n Wireless Router in refurbished condition for $49.99 with free shipping. As a pricing comparison, it’s regularly $99 brand new (but can be found as low as $89), $65 refurbished from Apple, and normally $70 refurbished from Best Buy.
The AirPort Express can be setup and managed from your iPhone or iPad with the AirPort iOS app and features a 3.5mm audio jack to add AirPlay streaming to your current speakers, a USB 2.0 port to take advantage of AirPrint, and can create a completely separate guest network. You can also use it to extend your current wireless network, improving overall signal strength and reliability. More information regarding Best Buy Geek Squad Refurbished items can be found here. Rated 4.5 out of 5 stars from 1,100 Amazon reviewers.
If you need faster 802.11ac wireless then you’ll have to go with Apple’s AirPort Extreme, which is $119.99 refurbished from Best Buy, $129 refurbished from Apple, or $179.99 new from Amazon (Orig. $200).