Amazon US April monthly bestsellers and general Amazon based discussion

[NewGuy]

1 million - ~180K (from Japan) = 820K

Let's say 40% of the sales are in the US and 60% ROTW

~328K in the US

Is it fair to estimate 10-30% of total sales in the US are PSN sales? If so, PSN sales in the US 32.8K
So retail sales in the US would be 229.6K