Don't know about kodocha or Wedding peach, but if
you are looking for cheap Marmalade boy cels i
think i have several.

http://cyclinganime.rubberslug.com/gallery/home.asp

The ones for sale are the labeled 6,7,10,13,14 and
their price ranges from $10 to $30 depending on
the cel. If you are interested on any you can find
my e-mail on my gallery.