Guitar Rig 5 is currently free if you buy an audio interface from Native Instruments. The cheapest one is $109 so you can save $90 if you just buy an audio interface
Why are my GUITAR RIG LE / Factory Selection / Elements Selection Presets in Demo Mode? – Native Instruments
Native Instruments Guitar Rig 5 Pro v5.1.1 Free Download - My Software Free
Stream GUITAR RIG 5 - Metal Tone Test (Vst Plugin) + DOWNLOAD FREE METAL PRESETS - amnerhunter.com by Amner-Hunter | Listen online for free on SoundCloud
Native Instruments Guitar Rig 5 Pro v5.2.2 Full version » 4DOWNLOAD
How To Set Up Your Guitar Rig For Optimal Rocking – FuelRocks