Originally Posted by seeker333

You are misinformed.

Probably 99% of all steel frames made since ~1992 are tigged. Nowadays only high end steel frames are brazed - most of these are lugged, far fewer are fillet brazed.

Brazing can be done at relatively low cost. You can buy a propane torch and brazing rod at most hardware stores for as little $20US and repair a joint, attach a boss, etc. However, good builders have much fancier tube milling and brazing equipment and use more expensive, harder-to-find materials.