It is illegal to sell, and against the rules here to promote or advocate the ownership of them, but he's asking for someone to let him know where to find one... so as long as someone isn't publicly offering to sell one, and that people contact him privately (as per the rules) where to find one, he's not actually breaking the rules.
And since this isn't a copy/replica of an actual Transformers toy, it's not going to end up in circulation and fool people. (I'm not condoning it's existence, but when it comes to KOs, this is more like a 3rd party toy... and not in the same league as the fake Masterpiece toys or exclusives that are a minefield for collectors.)