The kits I build, parts alone, cost more than the complete kit from e-bay. I've taken one of those kits apart and seen enough of the chinese assembly quality to know that it's not the best in lots of cases. Unfortunately now, almost every headlight ceramic connector comes from China.
Pulling headlight power at the battery on older mopars is not the best approach with the bulkhead/ammeter.
There are a lot of unseen issues that get missed in these kits. If people are cool with the wire covering installed, parts used and build quality, go for it.