As one of its daily deals, Best Buy via eBay offers the Ninja Nutri Bowl Duo with Auto-iQ Boost Blender for $79.99 with free shipping. That's the lowest price we could find by $19, although we saw it for $11 less a month ago. It features five Auto-iQ programs (smoothie, extract, mix, chop, and dough) and includes two 24-oz. Tritan Nutri Ninja cups with spout lids, a Nutri bowl, precision prep blades, and a dough blade. Deal ends today.