I just fixed the bug where the combobox doesn't show the correct tarot type (Bronze, Silver, Gold). It was indeed caused by not having all 3 materials (Fairy's Powder, Piece and Marble) in your inventory. The logic used to check each type was messed up.
The correct one will now show and not mess up your reading. The dropdown will from now on show all 3 types even if you don't have the required material - and if you try to use one without the necessary materials it will give a warning that you don't have the necessary stuff etc. etc.
I will patch the fix in at the next update.