They are Contribution Items from October 2007. They were only available during that monthly period. They are currently 17k-20k (1k=1000g). You would have to find them from a user in the Exchange. =)
Edit: Also. I would like to point out to read over the
rules for this site. Double posting is not allowed. Also read over the Rules/FAQ for each of the forums as they have their own rules added ontop of the site rules that pertain to the forum and its standards.