Most Plexus Wheel deals are discounts off of their back massagers. Coupon codes give you a discount off a single order. To see the latest coupon codes found by Capital One Shopping members, look below. The discounts you get vary depending on the code. Subscribe to the Plexus Wheel newsletter for 10% off. One final way to save a little: Shipping is a flat rate of $5 on any US order of more than $50.