Link?
I'm definitely not in the habit of saving links to relatively obscure trivia from 3 months ago. A quick google search throws up garbage
I'm also making an assumption that number is from end sales. If it's A1U's own revenue, then Walmart insiders have reported they charge $150-$160 (varies per cab type) to Walmart
But like I said, that's not all that great of a sales rate for Walmart, so a lot of the stores discount them to move them quickly because they take up a lot a warehouse and shelf space. Even with the discounts, you're not looking at them moving them more than 1-2 a week per store on average