Groupon offers the SPArific Full Body Shower Spa in Chrome, model no. WSPA2, for $29.99 plus $3.99 for shipping. That's the lowest total price we could find by $20. It features three adjustable jet sprays on a flexible hose and connects to the existing showerhead without tools.
Groupon takes up to 92% off a range of goods and services as part of its Deductions Sale. (It advertises up to 80% off, but we found deeper discounts within.) Shipping adds $3.99, but orders of $34.99 or more bag free shipping. A couple of best bets: