The two things that come immediately to mind are a pair of (faux) fur-trimmed (faux) silk brocade Cicciabella lounging boots that retail for about $30 everywhere, or everywhere I could find. But an eBay seller had some in her store, I watched them sit there a while, they were not described very well, and after a couple of months, I emailed her and asked her if she would just send them to me for $10, free shipping, all legit, through eBay, etc, and she did!
The other was a cotton cardigan, I forget which online retailer, but it was being sold as part of some pajama separates, but it looked to me like a regular cotton cardigan, it was marked down to $3.99, and it was some holiday or other, and they had free shipping. When it arrived, I saw that it was indeed just a regular cotton cardigan, actually a higher grade of cotton and better workmanship than I had expected, and not "red" as advertised, but in a lovely shade of fuschia that is one of my best colors, but I suspect just wasn't chosen by a lot of the store's customers, so they reduced it!