The Clubmazda3 price list guide...

http://www.fab4online.com/cm/viewtopic.php?f=62&t=819

A minor pms price apprx.

P6,249.42- MGH - 70T km PMS
----Labor PMS Php 1,300.00
----Parts Washer 33.73
----Spark plug 1,191.72
----Plug, drain 180.61
----Helix ultra 2,885.00
----Cartridg, oil filter 438.36
----3M brake cleaner 220.00

For 20k kms pms, you'd probably add the AC and Engine filters, possible rear brake pads... and if you add the very optional Wins Combustion cleaning process, you'll reach 12k+ or more.

The quote from Mazda Makati for a 60k kms pms (a major one) was

P13,265.25 - Mazda Makati - 60 T km PMS (change oil/aircon filter)

Petron Car Care Center * Ortigas could be an alternative PMS service center for you.
Speedlab * QC Avenue also can do PMS service for our Mazda3