Yay, got my Jasper Pro!
Thanks to Dave2h for the pointer, I went to Target on Madison's West side today. They had 3 boxes behind the glass: an arcade, pro, and elite.
The Arcade was lot number 0845x, team CSON (I think). That's the highest lot # I've seen.
The Pro was lot 0841 FDOU.
Didn't see the lot on the Elite.
So I asked the salesguy if he could check the back - told him that I was looking for a specific lot number. He asked which, and I asked for an 0844. (well, why not?) Told him I'd buy it right there if found, otherwise I'd have to come back. He went over and talked to a younger lady, overheard her telling him that there was a pile in the back...
He finally comes back with a 0843x CSON, same number/stickers that were posted earlier. Couldn't see the power rating through the cardboard, no matter how hard I tried, but bought it anyway (and got the free $40 gift card too). Afterwards, when opening it up, it does show the 12.1A rating and the split power connector.
Thanks to all for the information here!