eCost has the refurbished Garmin Nuvi 750 4.3" Screen GPS with Text-to-Speech & 5+ Million POIs with NavGear Dash Mount in their Secret Sale for $136 + $0 shipping = $136 shipped
. From the eCost homepage, click the "Secret Sale" at left and then enter your email with code 92CD384E56
to see this offer. It has an FM transmitter that plays voice prompts, MP3s or audio books and does it all through your car's stereo system.