I think the Jones name still holds plenty of value - but the pool of racers willing to pay the premium for that name is really small, when there are really good quality units available (single units anyway) at far more reasonable prices... and then there is the shipping cost for something that size...
I think there are quite a few racers out there that have expanded their tire rolling capacity over time, if they need that much capacity, but the nice thing about the 8 pack is it takes up very little floor space for what you get, compared to adding rollers over time, unless you build your own stand.
With the growing popularity of treaded classes and no prep classes in general, demand for multiple roller / hotbox set ups is likely decreasing.
Now if you need the 8 pack capacity, then this set up is a sweet deal, but the reality is very very few racers will need that much capacity and those that can justify it, probably already have it..
I currently have a double roller and two hot box single roller set ups and they eat up a lot of bench top space. This would decrease the space I'm using now which would be a bonus and if you are close to Nebraska where shipping would not be involved; I could get interested.
No question on the Jones quality for sure.