A seller in Australia offered these gorgeous vintage black leather OTK boots for a starting bid of $125 US, but they didn't get any bids and haven't been relisted as of this post. If they'd been my size instead of a size 7, I'm pretty sure I would have bid on them.
Besides the rich-looking black leather, I especially like the wider spiked heels (very Chloe), nicely rounded toes and the ability to be cuffed for different looks.