This applies right now in New England, and I imagine will move south and west as the weeks pass.
Many local nurseries, garden centers, and feed stores are closing out their inventory of shrubs in preparation for the winter. Some offer 50% or more discounts, some BOGO and other sales. Needless to say, anything they can get for them now is better than nothing, and that means they need not care for them (or worry about having them die) over the winter.
Look particularly at locations whose main business is not
live plants. One local feed store is offering a free shrub with a $10 purchase. Without making extra trips or purchases, we have picked up two nice rhododendrons and two nice winterberry plants over the last few weeks.