[Staxed]

From the vb license agreement

"If you are the original licensee of the Software, you may make a one-time, permanent transfer of your license rights in the Software to a third party ("Subsequent Licensee") provided that five (5) conditions are met. The conditions are: (a) you are the original licensee, (b) the Software was purchased by you more than 90 days prior to the transfer, (c) you do not keep a copy of the Software for yourself, (d) the Subsequent Licensee agrees to the terms of this Agreement and the License, and (e) the Subsequent Licensee agrees to assume your license rights in the Software, excluding this transfer right. For sake of clarity, the right to transfer the Software belongs solely to the original licensee; the Subsequent Licensee is prohibited from transferring its rights to any third party."

You can put in a support ticket in your vb.com member area to make sure your license is eligible for transfer. Then once you find a buyer, give vb the buyers info and they'll transfer it to them