I bought a particular make of pulse oximeter from Amazon after reading reviews. I received instead an unbranded fake that looked nothing like the pic on the website. I contacted the seller, who said he'd give me a 10% refund if I kept it! I looked at his feedback and found that he'd done the same stunt a good few times before in recent weeks. I complained to Amazon and got an instant full refund, no quibbles. The chap never did ask for his oximeter back and I'm blowed if I'm paying to send it to him.

What am I bid for a very nice unbranded pulse oximeter, still in its box? :-)