Saw some cheap preAOE Constructbots at the Reject Shop

$8 for Cliffjumper, Silverbolt, Breakdown, Dead End.
$15 for triple changing Bumblebee and Blitzwing

The smaller sized bots aren't ones I've noticed at stores before, the two Cons both based on their Prime versions.

They also had the Prime vehicle + legion sets for $20 IIRC