FYI, haven't confirmed, but one of the folks on FB noted that the Jlab card in the box is actually for a free set of earbuds, not just a discount.
Edit: looks like the earbuds are $20, so with the discount they are free
if you scan the front code it takes you to a $20 product. so the discount code would have to be applied and its "free" . there is no shipping within the US.