Why not?

Why isn't there a Baseline price guide for GWEN Greens like there is for all the others campaigns? I'd start one if I knew where to begin...

It's because they are hard to keep up to date, and as the other ones became completely outdated, they were unstickied. People just start them here when they have a good number of the prices down themselves and want to share with everyone, but if the thread becomes full of spam, it gets closed. If you want to start one, you can try, but it'll be difficult to keep up to date, and you should have most of the prices accurately posted in the thread when you start. I'm closing this thread now since it's not a PC thread, and I believe I've answered the question.