At one point in time, these were not listable here. Hence the reason they weren't added until earlier this year. I'm not sure if they actually are listable, but all I know is it wasn't me that added them.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).