I'd assume no one wants it because its around $2900 in parts new, and you want $4500.
I have seen these posts a lot and I would really like to know where it is coming from where people claim "2500-2900" brand new parts when just to get 1070's in the US are an average of $450 per card without taxes of any kind. Even taking the average of $450 x 6 equals $2700. That is just GPUs. Not including other parts and the time spent to put it together and fine tune it. I have to agree with OP I have seen a ton of low balling on the rigs lately.
I had to laugh when i read this. adding on the extra parts and you maybe get 3300 in brand new condition. as to the claim that the software implementation adds over 1200$ in value read the op where it clearly mentions issues with current software/driver/whatever setup. People buy rigs like these to eventually make a profit not waste money on "finesse" when its just running a generic minning os that's readily avaiable. price is way to high for heavily used equipment