Some DJ controllers unlock the Pro features automatically. Check the official list on virtualdj.com. If you plug in, say, a Numark Mixtrack Platinum, Virtual DJ might give you Pro features for free with that hardware.
October 26, 2023 Subject: Analysis of Software Acquisition Request for VirtualDJ Status: Advisory/Security Alert virtual dj pro infinity 8.4 download free full version
: Modified software frequently crashes or glitches. For a DJ, this means the software could fail during a live performance, leaving you without music. Some DJ controllers unlock the Pro features automatically