I have a S corporation. If I ever want to go back to doing my own thing. It's something good to have, in the end I spent less than $1,000 for the tax, legal, financial advice to start up and filing fees - dot com name etc.
I will tell you this:
ALL LAYWERS ARE THEIFS - DO NOT GIVE THEM A RETAINER!
Make sure you trust your financial advisor - Family members should not fill this roll.
To run a successful tech-repair type business you do not need:
a web site
fancy hardware (iPad, etc)
You need to be HONEST, Available, and do good work.
People skills are a must and try to get BONDED. Most insurance companies will not bond you, however, If you get a partner they can approach the insurance company and bond the s-corp.