MGS V negative GMP (offline GMP resources vs online GMP resources) - YouTube
Metal Gear Solid V - Fastest way to farm GMP! - YouTube
How to earn money (GMP) in MGS V? | FAQ - Frequently Asked Questions - Metal Gear Solid V: The Phantom Pain Game Guide & Walkthrough | gamepressure.com
Apparently 5 million GMP is the limit so I had some wealth to flaunt : r/ metalgearsolid