This is a Superior Drummer 3 license from a parted out bundle. You'll get a license code via Reverb messages for immediate redemption on Toontrack's site or software, no license transfer involved. This is not an upgrade license or an educational license: this is the full license, exactly the same that Toontrack sells for $399 on their website.
Pro-tip: use an address in one of the tax-free states to avoid paying sales tax. Usually software purchases aren't subject to sales tax, but Reverb would still charge it in most states.
From Toontrack:
Superior Drummer 3 yields endless choices for honing, shaping, and molding drums. Over 230GB of raw sounds were captured at Galaxy Studios by the legendary George Massenburg. There's also drag-and-drop support for individual or third-party samples. SD3's mixer provides advanced routing and control over individual mic bleed, and it's loaded with 35 top-tier studio effects. And with integrated audio-to-MIDI conversion, Superior Drummer 3 provides powerful drum replacement and augmentation. Finding the right groove is easy, thanks to advanced search functions, and you can build and arrange full drum tracks without leaving the program. Complete with custom drum graphics, a scalable interface, and detachable windows, Toontrack's Superior Drummer 3 is the final word in drum production.