I got some from the dollar store, same mold but not sure if it's same quality. I have the purple beetle, grasshopper, and dragonfly. They're OK, nothing special really, but more durable than most other KOs I've bought. G1-ish articulation, cheap stickers. But not too bad.
You could check here, see if there is any more info on them. http://www.tfw2005.com/boards/transformers-toy-discussion/191817-knock-off-transformers-thread.html