JBL via Newegg offers the JBL SoundFly Air AirPlay Plug-In Speaker for $39 with free shipping. That's tied with our mention from two weeks ago as the best price we've seen. (It's also a current low by $61.) This 20-watt speaker features AirPlay, a frequency response of 60Hz to 20kHz, compatibility with JBL's OnBeat app, and plugs into any AC wall outlet (it doesn't run on batteries). Deal ends May 10.