We can't tell you about the test cost in different countries. You can ask your doctor for a type specific IgG blood test.
Is there a reason you think you might have herpes?
If you don't have symptoms, and haven't had a lot of risk, please really consider if you want to take the test. There are false positives on the type 2 test, and working through that can get very expensive and can take weeks. I'm not sure the testing needed to do that is available in the Philippines.