Source Thread: http://www.creationasylum.net/forum/index.php?showtopic=568

  말 그대로 돈 액수를 세자리씩 끊어서 표기(123,456,789$)하는 스크립트입니다.

#==============================================================================
# ** Window_Gold
#------------------------------------------------------------------------------
#  This window displays amount of gold.
#==============================================================================

class Window_Gold < Window_Base
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
   #Advanced Gold Display mini-script by Dubealex.
   self.contents.clear      
   case $game_party.gold
     when 0..9999
       gold = $game_party.gold
     when 10000..99999
       gold = $game_party.gold.to_s
       array = gold.split(//)
       gold = array[0].to_s+array[1].to_s+","+array[2].to_s+array[3].to_s+array[4].to_s
     when 100000..999999
       gold = $game_party.gold.to_s
       array = gold.split(//)
       gold = array[0].to_s+array[1].to_s+array[2].to_s+","+array[3].to_s+array[4].to_s+array[5].to_s
     when 1000000..9999999
       gold = $game_party.gold.to_s
       array = gold.split(//)
       gold = array[0].to_s+","+array[1].to_s+array[2].to_s+array[3].to_s+","+array[4].to_s+array[5].to_s+array[6].to_s
     end
  
     self.contents.font.color = text_color(6)
     gold_word = $data_system.words.gold.to_s + ":"
     cx = contents.text_size(gold_word).width
     cx2=contents.text_size(gold.to_s).width
     self.contents.draw_text(4, 0, 120-cx-2, 32, gold_word)
     self.contents.font.color = text_color(0)
     self.contents.draw_text(124-cx2+2, 0, cx2, 32, gold.to_s, 2)
  end
end

** 같은 쓰레드에 올라온 dragonslayer씨의 간략판을 정리한 것입니다:

#==============================================================================
# ** Window_Gold
#------------------------------------------------------------------------------
#  This window displays amount of gold.
#==============================================================================

class Window_Gold < Window_Base
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
    self.contents.clear
    gold = $game_party.gold.to_s
    unless gold.size > 4
      money = gold
    else
      case gold.size
      when 5
        ary = gold.slice!(0,2)
        money = ary + ","+ gold
      when 6
        ary = gold.slice!(0,3)
        money = ary + ","+ gold
      when 7
        ary1 = gold.slice!(0,4)
        ary2 = ary1.slice!(1,4)
        money = ary1 + ","+ ary2 +","+ gold
      end
    end
    cx = contents.text_size($data_system.words.gold).width
    self.contents.font.color = normal_color
    self.contents.draw_text(4, 0, 120-cx-2, 32, money, 2)
    self.contents.font.color = system_color
    self.contents.draw_text(124-cx, 0, cx, 32, $data_system.words.gold, 2)
  end
end