For your parousal I offer this M-audio Keystation 49e Keyboard for $60.

by M-Audio 

• 49 full-size velocity-sensitive keys with natural piano feel
• USB-MIDI connection for playing virtual instruments, controlling recording software, and more
• Transport and directional buttons let you operate your DAW from the keyboard
• Pitch bend, modulation, and octave controls for expressive performances
• USB-powered and supports plug-and-play connectivity to your Mac or PC Lightweight design for easy setup and portability

You can get it for $60 online but it'll cost $20 for the shipping.