No compensation shall be recoverable for publishing a public notice in any newspaper unless the bill is accompanied by an affidavit of the publisher of the newspaper or the publisher’s designated agent, having knowledge of the facts, stating that the newspaper has complied with all the requirements to constitute a qualified newspaper. The affidavit must set forth the dates of the month and year and the day of the week upon which the public notice was published in the newspaper. The affidavit must also include the publisher’s lowest classified rate paid by commercial users for comparable space, as determined pursuant to section 331A.06.