Temple of Luck

Here, you meet a mysterious monk named Samuele, who offers you the choice of two prayers: A suggestion to make proper use of the prayer would be to apply the Big Luck Prayer and enter the dungeon at the entrance. This will grant the chance of finding more ingots or rare gear which will give medals and have more Leader type monsters show up.
 * 1) Small Luck Prayer: This increases the possibility that a monster will drop a Treasure Chest. (298G)
 * 2) Big Luck Prayer: This increases the possibility that you will find a highly rare item. (800G)

(One user's thoughts: I've not noticed a huge difference with / without these prayers, so IMO save your money for Zordan's Training Area.)