Well, the two studio banks you linked above, the ones with the stands, they went right into my Amazon wishlist so that I had, quick handy reference to investigate them more. I liked the looks of them and the price seemed very reasonable for the amount of light they put out...though it didn't seem clear to me if their specs were combined for the two of them, which would be disappointing, or if they represented the individual lights.
Honestly I don't get the comment on spending thousands. LEDs themselves, individually, cost what little they do because they have to cost something. The money you'd be paying would inevitably be related to the construction of the case and associated hardware for dimming, etc. I mean, maybe if every one of those little guys was hand wired in someone could justify a tall sum but, even then, that hand wiring would likely have been done by someone in a far off land who might have been paid a dollar that day. The high cost is all mark-up and branding.
Take one of those 160 LED lights...that's less than $2 worth of actual light-giving-device and the rest of the cost is due to wiring, dimming and the materials + manufacturing of the case, and then mark-up. I've been looking at replacing all of my signals and blinkers on my car with LED bulbs and if you go to a major automotive retailer they're asking upwards of $20 or even way more for a pair of bulbs I've been able to find for about $6 at a lighting-oriented site that's not specialized in automotive products but is more closely related to the actual manufacturer who produces all manner of LED lights.