Slightly off topic but if you're looking for pots then I'd look around at the op shops for pressure cookers. They are usually built to a very high standard because of the danger of them exploding. Pressure cooking is out of fashion, and they take up a lot of cupboard space, so they tend to be fairly easy to come across. So you'll pay loose change for a big pot that'll last forever.
I wouldn't be buying anything that's likely to explode if faulty, from an op shop. Sure a safari suit and platform shoes, but a pressure cooker hmmmm