Here is your mystery solved.
The "Standard" Shakers as discribed that Parts Express seem to be selling are indeed "Buyouts" that came from a OEM account that was using them as Actuators for Video Game accessories..., both a Video Chair and Wearable Vest. For some time, the Jobber that has been trying to get rid of them has had them listed for sale in Bulk Quantities on Ebay, Ubid, and other Web outlests. Right down to the "White" Box they shipped in because of the lack of need for packaging. at least that Gent discribed them as such, even including a photo of the unit and White Box.
I have my finger on the pulse of the supply of ALL Auras on sale everywhere, since I's a be a you'sin 'em at the rate of about 50-60 a month. Mostly the "Pros" ya know, but this was to good a deal not to "jump on".
Obviously, Parts Express, having sold many "Standards" in the past and seeing the increased demand, jumped on a deal too. Too bad.
I just purchased an entire Factory Sealed box of 16 Standards, specifically for a new installation, from a EBay seller. They all came in Factory Sealed packaging, with attached Leads and the accompanying Hardware. But I guess they do not count, for the seller (...a 5-Star rated Ebayer) has had them for awhile. The original Packing slip was still on the outside of the Aura Factory Shipping carton, dated October, 1999.
I got the 16 for $190.00. That's $11.88 each.
Yeah, I know. I got lucky. Next lowest price I could find Online was $38.00 Pr
Below is the installation they went into. 8 in a 14' x 6' Platform. 8 "in De Floor" The total wiring configuration was;
2 ea. Paralled to 2 Ohms, then two pairs of two Seriesed to 4 Ohms (5 Ohms nominal) There are 4 Channels as described, each "Pair" of Channels to be driven by NAD Stereo "Main" Amp @ 100 watts x 2
We all don'ta be a' messin round down yar in Mississippi, all ya all.
Der's a'gonna be sum thunder down yarbouts in da pretty neer fewtur.