well I found a OEM Parts website that has the breakdown of the parts and when you search the part number on any OEM parts site they will give you the costs. (oemmazdaparts.com does not list prices)
http://www.oemmazdaparts.com/parts-...ouring/2-0l-l4-gas/body-hardware/sound-system
AMPLIFIER - 2013 MAZDA CX-5 (KD4-666-A20A) $442
AMPLIFIER BRACKET - 2013 MAZDA CX-5 (KD5-166-9B0) $9.00
AMPLIFIER INSULATOR - 2013 MAZDA CX-5 (KD4-566-EG5) $3.00
2x FRONT DR SPEAKER RIGHT - 2013 MAZDA CX-5 (KD4-566-A60) $162.00ea
3x INST PNL SPEAKER - 2013 MAZDA CX-5 (NE6-166-960) $82.00ea
2x SPEAKER RIGHT - 2013 MAZDA CX-5 (NE6-466-A60) $70.00ea
Total $1082.00
With Satellite Radio/w Pandora
SATELLITE RADIO - 2013 MAZDA CX-5 (GS3-M66-DR0) $380.00
SATELLITE RADIO BRACKET - 2013 MAZDA CX-5 (KF6-966-9B0) $21.00
SATELLITE RADIO SUPPORT BRACKET - 2013 MAZDA CX-5 (KF7-066-9B0) $6.00
Total Add: $407
Navigation
CX-5 MAZDA NAVIGATION SYSTEM (VEHICLE MUST BE EQUIPPED WITH FACTORY TOUCH-SCREEN DISPLAY), KD37-79-EZX $450.00
Total Add: $450.00