Lots of factors that are missing here.
What kind of piping (copper, pvc, etc.)
How much is needed
What exactly is leaking and were
My experience last year was a problem with a fountation leak and with so many people out of work, you may get lucky enough like I did to find a friend who need work. he knew my problem and was glad to do it for half of the quote I received.
You can also place an ad on Craigslist if possible and see if you get any bids.
Good Luck,
Jeff