All true. I've made many sealed and ported sub enclosures for 10 - 12 inch drivers and I know getting deep tight bass does not require $3000. I guess it is the DIY in me that says some of these that look like they were built in a garage and have no greater tech than a good driver with a good amp should not cost so much. The JL, the B&W, the Axiom, appear to have been tuned and designed in ways that add value. there is a threshold cost where you should get more than a box, driver, and amp. You should get R&D, drivers selected for that box and that amp, etc. Just my opinion, no doubt about that part.

Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire