Not as good as the $1.50 Creamy Cheeseburger deal at BK, but McDonalds rarely drop their prices.
I think the Hashbrowns are usually around $2.20 possibly depends on location.
At just $1.50, the Hash Brown is a perfect side at any time of the day. Get in quick, available for a limited time.
Hash Browns are usually priced around $2.50 each at McDonald's. They're not cheap. As you said, the price varies depending on location and restaurant.