I finally found these at my local TRU today in Edmonton.
There was only ONE box on the shelf and from the looks of it all the figures (ie. x2 of everything) were there except.......NO EELS OR BATS! Someone swiped all the army-builders and left everything else.
I made myself a set of the 10 I could find. But then another guy showed up, specifically looking for EELS and BATS and said at least one other local TRU was already cleared out of those ones.
I hate people. Oh, and I hate Hasbro too for failing to recognize or choosing to ignore this army-builder fetish and not adjusting production numbers to at least attempt to compensate.