Coins are an essential part of play for many people in LARP. Gambling or a beer in the tavern, a band of mercenaries or a potion from an Alchimist everything wants to be payed. Therefore the common adventurer of needs to have some money with him.
We think: Play money should be of little value in the real world to have fun spending it during the game, at times even a higher amount. For this those coins are just the right thing. You get 50 pieces in a small fabric pouch for a small price.