Well you have to pay a lot for either labor or parts. A 4" hymax coupling is about 350-400 a stick of pipe probably a couple hundred. But labor will be less than an hour total.
Go some of these other routes and the parts might be cheaper but labor will take a lot longer and more things to go...
If it is a clean break just get a Hymax 2 coupling and bolt it on. If not a clean break get two and a short filler piece. The coupling requires no hold backs and will last longer than the pipe ever will.