Picked this up today from Craig's list for $375. I don't think I'll have any more trouble cutting through the mix, especially when my PF-800 is delivered.
It's an SVT810E, looks like plywood construction, in poor cosmetic condition but perfect working order. The seller said he bought it new from GC a few years ago. We pulled off the grille and the speakers are in perfect condition. The color on the woofer cones has not faded, as one sees in some of the older units. The serial number dates it to November of 2007.
Because I have a Honda Civic, and am not very strong, my plan is to build 4 cabinets with 2 10's in each, replicating each section of this cabinet, and then sell or part out the carcass. I'd love to keep it, but I just don't have the room. Build thread to follow.