It’s description was pretty much empty, and it cost half as much as every other one, but it was on Amazon. It came in today, and it looks brand new. Not a scratch or mark on it. I’ve only taken a couple of pics through it, but I think it is significantly better than the basic Canon one.
I need to play with it a bit more, but so far it seems like a decent purchase. It’s a Tamron 18-270 1:3.5-6.3.