Aftershokz Trekz Air $60 After $20 New Customer Coupon at HSN

HSN has the Aftershokz Trekz Air for $80: https://www.hsn.com/products/afte…ne/9143029
For new customers, they have a $20 off $40 coupon ( https://www.hsn.com/content/NewCu…Coupon/711) that expires end of year 2020.
Total comes out to be $60 before tax.
Alternatively, they have a 15% coupon code if you sign up for their mailing list. Coupon takes some time to arrive, and appears to be unique.
Coupons do not stack.