Yes, I do. I don't do just PC repairs (hate them.) Design, consulting, sales, and lots of medical practices. Reselling software and hardware is great, as is providing continuing support. This is a "side job" and my sales should be around $750K to $1m this year. Last year my sales were just over $750K. I like to keep my profit margin around 50% of gross.
Lucrative business. Stay away from personal computer work. Fixing the stay-at-home mom's laptop is not fun, rewarding, or lucrative by any means.