: Virtual DJ is free for home use (non-professional) if you do not use an external DJ controller.
: For professional use or to use any DJ controller, you can purchase a Pro license for approximately $299 outright or a monthly subscription for about $19. Why Avoid Cracks and Torrents? : Virtual DJ is free for home use
If you're just starting out, this tutorial walks you through how to properly download and set up Virtual DJ for free: : Virtual DJ is free for home use