I bought this one on the logic "if one of them is crap, they all will be, so might as well get the cheapest one and fix it". Oh, and because I already have an iron and not much room left on the desk, so...
Low and behold, the earth wire was soldered to a STEEL barrel. Or was soldered. Maybe. Hard to tell. There was a ball of solder on the end of the dangling wire and that's it. Needless to say, we have 240V here so doubly painful if it all goes south. I soldered a spade connector to the end of it and made 2 small longitudinal cuts in the barrel to get a small "tongue" on which to connect it. To be honest, the fiberglass around the hot gun heater was wrapped around 3 times and I can't imagine how a heater could possibly make contact with the barrel, but still... just because I don't see it, it doesn't mean it can't happen, right?
On the other hand, the damn thing works ok and pretty stable temperature too. I don't think tips will last very long, but I can live with that. Oh, and it isn't anywhere near 750W as advertised. Pulls maybe 450W when cold. But it works ok, I have no complaints for the price.