Every item we have both a plat price and a ducat value for, ranked by platinum-per-ducat.
Low ratio = cheap in plat but valuable in ducats (good dissolve candidate for Baro).
High ratio = worth more selling for plat than trading in.
This isn't financial advice with a fixed exchange rate — it just shows both numbers side by
side so you can judge for yourself based on what you actually need (plat vs. a specific Baro item).