I bought one that looked identical to that from a Chinese merchant direct from their website. The internals looked the same, but were a little better put together, including an attempt at some strain relief. Maybe that's why it was nearly double the price!
It, too, was unearthed, but had a point that I could attach an earthing wire - so after digging out an old 3 core plug and lead I'd salvaged from another dead appliance, the unit was upgraded and tested.
It was rated at 40W 220V and when I measured it, the supply was around 240V and it was consuming 47W. That worked out about right. The only reason I bought it was for working on car wiring (especially in confined spaces) after my old 40W iron died. I've bought a few things from this merchant and while I've not had high expectations, I've haven't had many complaints.
For the price, it was worth a shot. Besides, pulling out something from my junk box and actually using it for this upgrade has helped justify my bower bird collection.