Ask HN: Anyone selling ebooks or other digital goods on the side?

I'm working on a new project (www.bngal.com) and looking for feedback from people who are selling digital goods (ebooks, themes, icon/graphic sets, screencasts).

This is one of the first verticals I'd like to target (if there's a need).

What do you use to take payment & fulfill your orders? What would get you to switch? Is getting exposure from a marketplace more important than a low transaction rate?

TIA