Dyson Owner Rewards members are eligible for one-time 20% off coupon (https://www.dyson.com/owner-rewar...chine.html
Joining is free (must own a Dyson product). If no coupon present, you can call 1-866-664-9004 to register a currently owned product/request a code.
Supersonic comes with attachments and detangling comb.
Code works for many products, free accessories with auto-registration of product.