Greetings.
The Baybrook Target had a whole end cap full of Sigma 6, about a week ago. I was in there Sat. 10/15, and it looked well picked over. There were only a hand full of figures left.
While raiding the 40th sets at KB (Baybrook Mall), I noticed that they only had five or six Sigma 6 figures left, even at $19.99 each (rip off). The 2 ninjas weren't seen any where.

(ninjas = stealth, hidden)(get it?)
The GIJCC sold their entire first shipment of Sigma 6. Somebody is buying them, and at full pop retail. I suspect there might be a few closet Sigma 6 fans out there.
IMO I think the packaging is the most ingenius part of the figure. I like how the ends combine to form a storage box for the acessories.
The blaster weapon, "Switchfire," doesn't seem to be selling as fast. There were still plenty at the store. That is another reason I suspect secret adult collectors.
Personally, I like the ninjas, Snake Eyes and Storm Shadow. They are pretty cool. I like the flip open communicator in the left arm of the figure. Wish they were 12" tall. I think these fig.s would be good just as they are, except in a 12" size.
My beef with the storage case end panels, is the completed storage box doesn't hold all the spare bits and peices included with the figure. IMO It could have been a bit larger.
Yes, I bought a few of 'em. And I played with 'em, too. I am hereby outing myself as a former closet Sigma 6 buyer.
They don't really seem like a Joe, but they are pretty cool little action figures.
Regards,
David