I just got one from the wizard but I always get restockables from wiz and it seems to be whats given out by the quests in general. But according to subetahq its not restockable. So should it be obtainable from him or did i glitch?

It should be restockable, it is only rare, and has an Official price, which means it restocks somewhere

Alright, I checked Subetalodge and seems it can be found at Defend and Conquer? Well thank you :D