$9 x 30,000 = $270000, which still isn't small, though seeing how long Blockland has been around, he probably isn't living off that.
Even if Blockland became Retail 10 years ago:
270000 / 10 = 27000
27000 / 12 = 2250
He gets $2250 dollars a month, supposing every month he has the same sales.
Eitherway, he gets more than $1000 a month.
Also if you stay to think about it, around 500 ID's are invalid.