why do you offer some codes for less than 40%.
your trust isnt really great. So it is a bit confusing to me.
I don't understand what you mean, I do not offer any kind of codes. I have 1 steam gift of Steam Greenlight Submission Fee to sell.
Anyways this copie should be just interesting for Gaming Developers, right?
Yes, and for anyone who want to sell something on the Steam Store. There are not only games you can sell there, also other software, movies and music. Just go to the Steam Store and look at all categories of what is being sold there.