nZDT free?

Hello - unable to find recent documentation on this.  the only thing I could find was 3 yrs old

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/b0bcdae4-a5f0-2d10-ae89-b5512d4aa999?QuickLink=index&overridelayout=true&49868865476595

Does anyone know if this nZDT can be done by the customer free of charge?  Or is this only available as a $$ service through SAP?  Details on this appreciated - thanks