Ransom So Far Gone Drake

i get paid by the letter like abcdefghijklmnopqrstuvwxyz

Lil Wayne actually says this. And it just means that for each letter he says he is essentially getting paid.
The Notorious D.I.P.
Drake is saying that since he gets money every time he says virtually anything, all he has to do is repeat the alphabet and he will, in theory, make money in doing so.