I hardly call the manufacture of generic open source hardware "piracy".
I call it piracy when it violates the terms of the open source licenses. When it say "Arduino (tm)" and it isn't, when it says "Made in Italy" and it wasn't. All you have to do is say "Clone" in your eBay sales page or whatever and put your own name and info on the silkscreen, and you're fine (by me, anyway.) Being deceptive (to the customer) by intent or laziness makes you a pirate, though.