Bag or Replenish

A large bag that resembles a messenger side bag. It is a 10 in by 15 in bag. It has two crosses equally distance apart from the center over where it closes and the closing latch has 5 small red gems in a circle. This bag use is to replenish any item the use wishes. But to do so they have to put in the equivalent amount of money. Only works on small to medium items(ex potions, darts, arrows, components, food, or anything else the DM decides is allowed). This bag is unable to produce any weapon other than ammo and cannot produce magical items other than common potions.  Every time the bag is used on of the gems begins to glow when all 5 are glowing the bag will not work until the next day.