That's actually fukking amazing if accurate and I wouldn't be surprised if he's worth more than that. All without any radio...just on the strength of his craft and dedication to it.
Guarantee you he's worth more than half these nikkas on the radio NOW, and will most likely still be when they get his age and have long been forgotten after sucking cooperate dikk for no real ROI.
Proof positive that there is money in this rap shyt if you wanna go get it on your own terms.