WTDist wrote:i have no idea on cost but i would consider buying a cheap tig for that price and learn to weld
Buying the tig is the cheap part, pay for the gas plus bottle rental is where it gets ya.
What you have to remember is you will be paying by the hour and most businesses now days are all $70 an hour and up and most have a 1 hour minimum charge. So with that in mind it is at least 1 hours work to cut that hole and put a ferrel on so it is most likely a "fair" price. If you can find a friend of a friend that knows how to do it then you might be able to get it cheaper or work out a deal.
Good luck mate :handgestures-thumbupleft: