You'd better decide how much time you can devote to each activity first. You also need to look into whether or not you can get supplier discounts. I've worked with a VAR for a school and they've supplied computers at or for less than I could purchase the individual parts at local retail stores. Their margin seems to be based on the ability to acquire parts at less cost than I can rather than on labor. They also offer warranty services which mostly cover replacing parts that have a warranty period. They handle the parts return for credit. Can you do that? They do repair as well. Labor charges are fairly high. Do you want to offer repair services? Again, with one person and that person needing to focus on studies, how much time do you think you can put into a business like that?
Hey, I'm starting a small one-person business making custom-built computers for people in my local area. The business is for profit, as I need the money for college. But my question is, how much would you charge for the markup on the price for the profit margin? I've got people telling me 10%, and people telling me 30%. (When I'm talking percent, I mean the price of the parts multiplied by said percent.)

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