I don't recommend that ANYONE go out and spend $500 on a dedicated outlet for a welder... But then again, that's cause I know a lot of people. Maybe 3 or 4 off the top of my head that are licensed electricians -- the same 3 or 4 that would gladly come over and run an outlet for me and/or show me how it's done for the price of dinner and a coupla beers. I've run about 4 of these myself and it's pretty easy and straight forward. In fact, I'd MUCH rather deal with 220 than 110... But nonetheless, without a death wish like me, you'd be much better off bringing a professional in than doing it yourself -- especially talking about something that can easily kill you when you mess it up. But that being said, only rich people and hermits need to pay $500 for this outlet -- the rest of us with no money and lots of friends can probably find someone with the knowledge and expertise to take care of it for you for the price of a friend...

HTH,
Chris
P.S. You *are* probably looking at about $100 to $150 in parts and supplies to get this done, but the labor can probably be found for free....