Amazon offers the Vornado Flippi V6 Personal Air Circulator Fan in several colors (Black pictured) for $17.99 with free shipping for Prime members. (Home Depot charges the same with in-store pickup). Excluding the mention below, that's the lowest price we could find by $5. It measures 6" tall and features two speeds, a pivoting head, and manual swivel base.

A close price: Best Buy offers it for $18.99 via pickup.