The tray was placed in front of Su Xiao, piled high with Soul Crystals, a sight that could arouse the greed of any Contractor.
In Reincarnation Paradise, Soul Crystals have numerous functions: enhancing core skill levels, essential materials for crafting equipment are Soul Crystal (Fragments), used as currency to trade with high-level plane creatures such as Abyss Demons, and even as materials needed for upgrading equipment can also be substituted with Soul Crystals, highlighting its adaptability and functionality.
If there's an urgent need for Paradise coins, one could also sell the Soul Crystals. As long as the price isn't outrageous, it's easy to sell them.
In Reincarnation Paradise, you might not find Soul Crystals to buy, but there's never a case of not being able to sell them. As for hoarding such things, no one hoards them; how do you stockpile something with more demand than supply? Every Contractor can make use of them.
