As long as you can hit the impression minimum (which will hopefully be lowered in the future), signing up for Twitter Blue literally pays for itself, and then some.

T(w)itter Daily News : NEWS: Non-Blue users are reporting being shown a popup about eligibility for the new ad revenue share programme.

It looks like Twitter is actively using the ad revenue share for encouraging users to sign up for verification. https://t.co/T5zNYieHYl

via Twitter @Sawyer Merritt