public boolean setDefaultPrice(OfflinePlayer player, Chest chest,Integer price){
		if(player==null || chest==null || price==null)
			return false;
		
		if(price<=0)
			return false;
		
		if(!isStore(chest))
			return false;
		
		if(!getStoreOwner(chest).equals(player))
			return false;
		
		stores.get(chest).setDefaultPrice(price);
		saveStores();
		return true;
	}