current performing kit is...zoom phrase sampler

Hey, speaking of phrase samplers, after watching some friends play around with a Vestax DDG-1, I had a hankering to try and get one, only to find that they're really rare. Does anyone know where I might find one, know why they're so scarce, or know a functionally similar alternative? I really liked the small "pedal" size and the simple design/layout of the Vestax unit, plus it'd look real nice alongside my PMC-06PROA mixer... Thanks. JG