Requirements to upgrade gun to level 3
Level 1
Master gun oil
Dark ingot
Rainbow cloth
5 100 Bills
Level 2
Pirate gun
Hellfire
Arquebus
15 100 Shells
Level 3
Ruh roh
Attestation from glacier (I hope you already got this)
62 100 Coins
Level 4
Visit Cid in Gunpowder room, have a chat to him.
Payment UNKNOWN
Also visit a place in Dynamis Xarcabard very close to Dynamis Lord (different place for each weapon)
Since noone can confirm or not confirm, it is guessed it will spawn a NM once the ??? is touched.
Drops still not to be found
Ranpares Gold Coin (10000 coin piece)
10,0000 Byne Bill
Rimerara? Shell (can't translate that one)
My speculation
Initial payment is 5
Second is 15
Third is 62
Initial x3
Second X4
Third x5?
That would make final upgrade in the vacinity of about 300 100 pieces.
Grand total of 400x 100 pieces.
Knowing that 100-500 pieces can drop a dynamis and that you can go twice a week, and sponser about 2-3 other LSs a week, you could probably get about 1500-2000 pieces a week, probably more.
People should be a little more realistic with all their guess work. This can easily be done by 1 person with LS helping to support them.