This is the biggest loosing part of Oxwall at this moment. People who use this software are not coders, most have no problem paying for themes, but paying for 1 off things is realistically not going to happen.
So here is my advice to you theme makers. Actually read your comments and stop posting fake reviews about how good your themes are. They suck, if they didn't you'd have people in the hundreds using this software and your themes.
If you want help specifically why they are so horrible, I'll be more then happy to point some of the issues out with them.