>> yAccording to the article, Georgia had monthly sales of 1400 before cutting their own tax credit. It would only take 32 states with sales like that to hit the 530k figure. Apparently Georgia is fairly big in terms of population and economy so it may be a bit of an outlier, but given there are 50 states in total it's still not an obviously silly figure."
32 states at 1400 does not make it 530k. Still an order of magnitude off.