maybe if they did make a jig for these, they would sell more.... that price is pretty steep. worth it for "custom" work - maybe. Can it be done cheaper - YES.
In the end, once you have one set, it's not too difficult to make a jig to make more of the for a lot cheaper. I've done it with motorcycle exhaust and we were able to cut the price in half. I understand the whole custom thing, but there are ways to build some things cheaper and not take a whole lot of extra time.
But, I would love to have a set, but i can use that much money on more things than a set of headers. If I had a pure race truck, it's be more toward the top of the list.