"On July 1st 1885, the day the service was introduced, sending a first-class letter cost 2¢. 129 years later Flag can print and deliver your ads by first class

"On July 1st 1885, the day the service was introduced, sending a first-class letter cost 2¢. 129 years later Flag can print and deliver your ads by first class mail, for just 1¢. That’s progress." Progress in what? Advertising or postal delivery?