Section 3. No newspaper or periodical shall charge for the publication of the said notices and announcements less than ten pesos (P10.00) per column inch, nor more than eighty percent (80%) of their regular commercial display advertising rates: Provided, That publications whose regular commercial advertising rates are lower than ten pesos (P10.00) shall not charge below ten pesos (P10.00) per column inch for the publication of the abovementioned notices and announcements: Provided, further, That in case of publications that do not carry commercial display advertising, the rate for the publication of legal and judicial notices shall be fixed at ten pesos (P10.00) per column inch: Provided, furthermore, That newspapers or periodicals may only charge more than ten pesos (P10.00) up to eighty percent (80%) of their regular commercial display advertising rates when there is proper and adequate proof that the rate claimed is the regular commercial display advertising rate: Provided, finally, That all newspapers or periodicals shall be required to standardize their rates of publication of notices and announcements, and that the distribution by raffle of judicial notices and announcements shall be limited to newspapers charging the standardized rates of publication.