Amazon has Bomves Electric Spin Scrubber, Cordless Cleaning Brush Scrubber for Home, 400RPM/Mins-8 Replaceable Brush Heads-90Mins Work Time, 3 Adjustable Size, 2 Speeds for Bathroom Shower Bathtub Glass Car on sale for $51.99. Shipping is usually free to Amazon Prime members or on orders over $35.

Since prices on Amazon change frequently, please review the current price at the product page before making a purchase.