Groupon offers the HotelSpa Giant 10'' Rainfall Square Square Showerhead for $27.99 plus $3.99 for shipping. That's the lowest total price we could find by $7. Features include 2.5-GPM regulator, angle adjuster, and 100 nozzles.

Note: It's also available with an 11" Brass Extension Arm for $32.99 plus $3.99 for shipping. That's the lowest total price we could find by $12. Both deals end December 3.