Sean hit the nail on this one and I will give an example which I think is germaine to the issue. Kevin Carter of K&K Audio (who has also designed for VAC and Art Audio), developed an extremely nice tube 6n1p-based tube phono stage through his work on the Art Audio Vinyl Reference. In his own company, he offered his phono stage as a kit (around, or as a pre-built piece. Just about every one I've heard that has tried one is WAY more than satisfied (I have said before that I think it is the equal of stages upwards of $4K). He now offers a linestage (Mood Indigo) that goes for about $1,700. By all accounts it is just a fabulous piece, but has not sold particularly well. One reason is that K&K is a small word-of-mouth concern without big time promotional or distributing budgets. Another was revealed in a conversation I had with Kevin who said he has found that that the price is too steep for some DIY'ers (kit) and too low for "high-end" audiophiles to take it seriously (pre-built). Sad. Maybe he should put a $5,000 price tag on it and market it like it is the next best thing since sliced bread. To his credit, he hasn't.
I am beginning to appreciate that much of the fun in this hobby can be had by finding such designers and equipment, though. For me, it leaves more dough for MUSIC, since my pockets are less deep than many here.