You can purchase Nexus 5.1.9 directly from the official reFX website . The Factory Content Library is included with the "Nexus 5 Standard" license. For the full 70+ GB experience, ensure you download the (separate from the plugin executable) via the reFX Cloud App.
: Hip Hop, Lo-fi, Hyperpop, and Cyberpunk. reFX Nexus 5.1.9 Factory Content Library
The library covers a vast spectrum of genres and synthesis techniques: You can purchase Nexus 5