Originally posted by: nick1985
nothing is worth them calling you for tech support.
Exactly. Once you build a PC for someone, you are tech support for life, even when they get another PC. You are a body of knowledge, and like leeches, they're going to attach to you and suck every bit of it out.
So make it clear that you can't provide 24/7 tech support - or else make it expensive. My high school physics teacher said that he charges $75/hr to fix people's PC's, mainly as a deterrent, but also because, if someone does get him to fix a PC, it'll be worth his time.
For the original question, I've only built PCs for family as well, and then all I collect money for is what the parts cost.