The tip is acerate - buy near-perfect weapons for greatly discounted prices then customise them without bedevilment near the fact you can't delude them, because you didn't pay some on it in the prototypical place.
Instance: you requisite a fiery Zodiac arm of demurrer

Hot Zodiac Steel of defense (+5), with 15^50 - maybe 50-100k

Hot Zodiac Steel of Demurrer (+5), with no inherent mod - nearly 5k.
Customize to +20% dmg ever, 10g

In this showcase you would refrain a lot of money and do 5% much damage. (sometimes 20% author, if upbeat is plume)