Jim Hulteen of D&J radio has a few of these Motorola Moxy radios available to the ham radio public for use with APRS

1-218-681-1856  ask for Jim    djradio@mncable.net   

1 Radio alone with no microphone   $25.00

2 Crystals $50.00 for the pair

3 setup of radio (install crystals and tune to freq, check to make sure will transmit and receive)   $25.00

You can buy the radio alone or ready to be wired to your TNC either way