YOU SAID:

Since when did ads cost so much?

INTO JAPANESE

いつから広告にそんなに費用がかかったのですか？

BACK INTO ENGLISH

Since when did advertising cost so much?

INTO JAPANESE

広告はいつからそんなに高くつくのですか？

BACK INTO ENGLISH

Since when are advertisements so expensive?

INTO JAPANESE

広告はいつからそんなに高価なのですか？

BACK INTO ENGLISH

Since when are advertisements so expensive?