I've decided to go with the community idea, because it's easiest for me to handle.
So here it is:
http://community.livejournal.com/treasureshop/
I put up the GW doujin posts there, so if you haven't had a chance to check those out, you can do it there. ^___^
Now I'm motivated to put all the other GW doujinshis, that I wanted to sell, up in proper posts. ^___^
And we'll see what else I come up with to put there. ^___^