>>5264688they're worth the $30 they're going for at TRU.
They dont even look all that much like a cheapo LEGO construction either, since the joints and other buildable areas are partially hidden by armor pieces. Their joints are mostly ball-joints, so they're very posable.
Only thing that it really needs is a better paint job. IT's mostly just colored plastic that you can put plastic on.
Here's what a custom looks like. It's mostly just the Knex that's been heavily painted, with some ugly bionicle pieces added on. Not sure why he did that, since just the Knex model already looks good.