Is there a place to buy these once ubiquitous but now apparently scarce bits? There's nothing to them so one would imagine they would be quite cheap, but I can't seem to find a source for new ones. I only need a couple but eBay prices are of the charts.

Here's an example of what I'm talking about. $15 for a rusty piece of 30 year old stamped sheet metal seems pretty outrageous to me, I could make my own out of stainless for less than that!

Any thoughts?