Musician's Friend again offers the Ion Audio Discover USB Musical Keyboard
, model no. ICK2, for $29.99
. With free shipping
, that's tied with our February mention and the lowest total price we could find by $15. This 25-key piano-style keyboard connects to your PC or Mac via USB and comes with two apps: Acoustica Pianissimo and D’Accord Keyboard Method Lite; it features velocity-sensitive keys and sustain, octave up/down, pitch bend, and program select controls.