I have one left. It's a retail box that contains a disc with a license key that will activate the a one year subscription for the Premium version of Malwarebytes on up to three PCs at the same time.
You can get the box shipped to you in a bubble mailer for $18 or I can send you the code via email for $15. These sell for $40 on Amazon or $60 on Malwarebytes' site itself, so... yeah. PM me if interested.