Compare the two rings Solaria and Lunaria. They’re the exact same stats. The only difference is that Lunaria has a defensive infusion slot and Solaria has an offensive slot.
The merchant does not sell offensive slot infusions, only defensive and omni infusions. Omni infusions cost 225 tokens while defensive infusions cost 75 tokens while offering the exact same agony resistance.
This means that someone who gets an Offensive infusion slot who just wants some agony resistance from the merchant will have to pay triple the price.
Mystic forge recipes are completely broken for both offensive and defensive slots. 20+ gold for +5 to a given stat is completely insane.
Please, if you’re going to make such crappy recipes for infusions, at least implement an offensive infusion that’s the same token price as the defensive infusion.