New to Overclock.net
Join Date: Jan 2011
Location: The Land of Cheese and Snow (and sometimes happiness)
Depends on the work, how many days it takes and how long/difficult the work is i.e. leak testing 48 hours etc... I agree, hourly would be a good start as I'd imagine anywhere from $20-$30 an hour for labor wouldn't be a stretch depending on your skill level. Considering the cost of the components (if not extremely marked up) and your labor for an 8 hour day to finish one build and making +-$200 on top of labor wouldn't be too bad.
I'm sure some people will say "Oh, you're overcharging people." And to that, I say "Not really." Think of it as a car mechanic, when your car breaks and you take it to get fixed by a car mechanic are you going to complain that it cost you $150 for the part and another $150 on labor to fix it? You took it to that person or business because they're an expert in that field. It's the reason places like Falcon Northwest and Puget Systems exist. People don't have enough knowledge or don't want to obtain the knowledge and skillset for building computers and would just rather pay someone else to do the work for them.
As for taxes you have to be a registered business to charge anyone taxes and it's regulated by whatever county you live in. I'm under the assumption that you live the USA.