Skybuilders' Crosscut Saw lvl 70 = 20 scripts maxed reward. Requires 6 ore, 6 another ore, 6 Sand, 4 logs and bunch of crystals.
Crafting and gathering combined takes about 3 minutes per item. That makes it 400 scripts per hour.
The worst part is the gathering. You could buy mats and make 20 scripts a minute, making it 1200 scripts per hour (or 4800 per hour with Trained Eye), but that would cost you fortune quite quickly.
Now compare it to 500 scripts from fates. In 5 minutes you get same reward as contributors who spend 75 minutes crafting and gathering the stuff themselves, or blowing 375k gil (Twintania prices) to buy the mats for those scripts and still spending several times more effort and time than the Fate.
The Fate reward is quite imbalanced.