Quetzalcoatl.Coronos said:
»Farming 1 Aello = 1 minute.
Farming Dynamis = 2 hours.
Farming Salvage = 45 minutes.
Aello = 1 HMP Pouch (19 HMP per pouch at absolute best).
Dynamis = 300 currencies (average).
Salvage = 130 Alexandrites (best).
19 HMP = 1,900,000 gil.
300 Dynamis currencies = 900,000 gil.
130 Alexandrites = 780,000 gil.
Aello == 1,900,000g/1minute
Dynamis == 900,000g/120m = 7,500g/1min.
Salvage == 780,000g/45m = 17,333/1min.
Math explains as to why people would rather just straight up farm HMPs rather than farm something else to sell, then spend their earnings on HMPs.
Math explains why there shouldn't be unlimit stones, fixed for you.