How many barters needs to be done in order for these to start to show up in bartering list? I am now over 1000 barters and still haven't seen one, while i have seen videos of people getting them after 230 bracket mark. All i got on that bracket was Island Tree Coated Plywood once and then even them haven't showed up since. NPC Padio seems to be trading everything else but Rock Salt Ingots. Or is my RNG just so bad?

Kaya Tuzu Külçesini Padio'dan nasıl alacağım? Elimde Dengeli Taş Kule mevcut.
How do I get the Rock Salt Ingot from Padio? I have the Balanced Stone Pagoda.

Normal barters have a chance of having a 100 pc rock salt instead of the 50 from ship barters.