It's always overestimated the total cost of a decent immersive multichannel setup...
Yes, it is expensive, but not necessarily 6 figures.
Neumann 80's are incredible speakers and the cost of 11 of them is quite low.
Also the cost of 4 Neumann sub's is quite low.
An immersive setup with these Neumann speakers, will be more than satisfying, i suppose a breathtaking experience, if you have a well treated room.
You can also try even cheaper active speakers than these Neumann's, for example the adam a7x or even fluid audio coaxial 8" active speakers.
You can find 11 decent speakers at a quite low budget, much lower than a pair of JBL M2, maybe even lower than just one M2, isn't that great? And Dr Floyd Toole's suggestions include that if you are using many speakers, they don't have to be as excellent as they need to be, if they are only two of them available, in a good old stereo setup.
I wonder if that statement is valid to electronics associated with multichannel setups, and i strongly suspect from my experience that it does.
If you try to get the JBL processor instead of monoprice, so that you can use the digital outputs of all 16 channels, which is a very good idea, you have to add the cost of 16 channels of DAC's, don't forget this.
So, the difference in cost is quite noticeable, i suppose it will cost more than double the cost of the monoprice option.
This means, that indeed the monoprice is very cheap for what it is offering. I can understand that many of you see the 4.000 category as "the out of budget" dream, of maybe you set this price by definition to "high end audio", but this is not the case.