Most Philippine BPO pay information circulating online is aggregated: a platform averages self-reported salaries or scraped postings and publishes a single monthly figure. This site is a useful exception, because the employer publishes actual figures inside its own job postings. Knowing which kind of number you are reading changes what you can conclude from it.
An advertised figure is precise, current, attached to one named role, and it is what the employer has committed to in writing. Its weakness is coverage: it describes one posting, not the site, and a campus running dozens of programs will have a wide internal spread that no single posting reveals. An aggregate has the opposite profile. It smooths across accounts and tenure, which makes it a fair midpoint, but it is retrospective, it mixes locations, and it usually omits everything variable.
Used together they bracket the truth. The advertised PHP 23,670 for a technical support role tells you what a specific program pays now. An aggregate would tell you where the middle of the market sits. If you are comparing this campus against another employer, insist on comparing like with like, since an advertised rate set against someone else's aggregate is not a comparison at all. Our iBEX Alabang guide works through how shift-related pay layers on top of any basic figure.
One further caution specific to advertised figures: "up to PHP 24,000" is a ceiling. Ceilings are set by the best case, which usually means maximum incentive attainment. Ask what the median performer on that program actually receives.