If you are more daring, you can try to go to Raon. That's where we bought my friend's head unit for Php3,500SRP (he paid less kasi nakatawad pa siya). Can play DVD's (has a video out for the headrest/ceiling mount monitor), MP3, has iPOD capability, SD card, Aux-in, etc.
It won't win any sound off competitions, but for the price, my pal is satisfied. If I had excess cash lying around, I'd get one for our ambulance also.

As expected, in response to Tesla’s entry into the Philippines market, Ford will be bringing in the...
Tesla Philippines