Hi friend of Jester!
Check out the site in my signature - it will show you a list of parts according to your budget. It has US as its default country, and you can change it to Philippines in the country-picker.
Currently, it does not yet have monitors, keyboards and other peripherals (that's our top priority though), but it shows you the essential parts that you will need with respect to your budget.
Clicking on the parts will link you to the suggested e-store.
Good luck on your build!