I've seen some anon OPs on /ck/ claim to have bought it, some with pictures. The mods usually nuke Ja/ck/ threads though. I think it might just be one of the more autistic mods since they sometimes go hours and occasionally survive long enough to scroll off the catalog of natural causes.
A lot of these are bullshit spam threads all using the same image of Jacksauce, shitposting by praising the sauce, and just shitposting in general. You see the repulsive image of the sauce from Should I a lot too, the one with what looks like snot on top of it.