I'm with GQuigley67 on this one, I paid through the nose for a torch when I was at college, it was a good torch and lasted years. A few years ago I went to an overfilling toilet job that was about 15 miles from my home, it was the only job that day so went in the car and just took the tools that I would need.
Turned out that the feed coming into the bottom of the loo was pulled over at an angle and would need cutting/replacing.
As my torch was a 30 mile round trip away I went to a local DIY store and bought a cheap torch with gas included, I think it was about £18. I still use that torch as a backup or in jobs where it might get nicked or knocked about etc. and I've never ever had a problem with it that a needle in the burner couldn't fix.
It's a messier flame than a more expensive torch and heating pipes takes a bit longer but it gets the job done.