With about $13 billion of debt taken up by Twitter in the deal with Musk there is increasing concern about servicing this debt, and the interest costs of about $1 billion a year far exceeding the $150 million previously borne. Musk says Twitter cannot rely on advertisers and he expects verified users to pay a $8 monthly fee for use of Twitter. "Its the only way to defeat the bots and trolls," says Musk of the subscription fees needed to pay the bills.