True. You don't have to check the price of the goods because WYSIWYP (pay).
And if it so happens that your salary is in the taxable amount, the first range/bracket starts low, so you still pay less. The tax gets higher in the upper ranges/brackets.
One more thing… (below)
RE: 
Bluesky Social
Noki (@noki3693.bsky.social)
The Philippines may not be a first world country but it has a good tax system. If your income is below the taxable amount, you don’t have to pay ...