The author makes a good point about support being a big hassle, but I think misses the lesson from it. When you're selling something for $7.50, customers demand

The author makes a good point about support being a big hassle, but I think misses the lesson from it. When you're selling something for $7.50, customers demand a lot of support if something goes wrong. But who says they are entitled to that support? You should craft a carefully worded answer to support emails around "support being through the existing web site and documentation". And quote a nice high hourly rate if they want custom services. Zero support should be the model for software priced under $100. Looking at ThemeForest, most authors respond to all comments in the forums for their template, but politely say they cannot assist with customization or make even small changes to their theme for people.