Viparspectra made a reef specific spectrum.
Diode count is hardly an indicataion of how good a light will be. Especially when the diodes you listed off earlier are pointless for our use.
There are a dozen plus "budget" fixtures out there already claiming what you are asking for. ReeFi, Noopsyche, Vipar, AliExpress Bars, etc...the hobby is littered with black box specials if one wants that.
Yes, the hobby overpays for things. It has been that way for decades and will continue that way. Early on hobbyists paid double for baking soda with a fish slapped on the box. Some pay extra for higher end lights that have more features and far better customer service.
If doing things as cheap as possible is someone's gig, right on. They should do that. Some of us find a lot of value in not dealing with and supporting companies that provide absolutely nothing to the hobby.