Exactly why I have chosen to share the "bug" its only a bug if its unknown. now that people can start to understand, it can be used as a mechanic and drive the price of SV down. I know my guide is not the best but if you understand fusion in the first place you can take the concept and apply it to better items like ball tickets and not have to fuse up the ranks. But I made this with the intent of the ability for everyone to do it unlimitedly so the shopkeeper scrolls seemed to be the best option.
You can also use a robot and get overwight 10 000/9 000 and since the skill exp cards have no weight they will still fuse, this way you do not need to even re-buy stuff for weight
Broadcasting and super BC, facture card, collecting card, can be obtained by leveling new characters. This is one of the reason you see hundred alts staying at AL. The leveling of new alt can be using league farm, daily events, HBF. The player that create over hundred alts to abuse BC have 0 cost in making skill voucher. A common practice in aoigg.