Miwok Event/Maker Merchanting

Yeah, that's how I've earned 2bill from the reverse equipment
I mass cleared the pieces at 8m each and resell the produced reverse equipment at around 400~800mill depending on stat.

Reverse lampion wa60 base 900m,
wa59 700m++

I plan on doing this from training at Oblivion - I can mass-produce Reverse Executioners/Nibelheims (1h/2h swords) and Alchupiz (spear) while training there, selling each at 500m+. Pieces currently sell for 5-10m each here.