I also saw that $9500 ammeter and was scratching my head, but if you go to that vendors "store" you will find roughly 25 other simple items with $9500 - $10,000 BIN price tags. The only thing I can guess is that eBay must offer some type of deal to sellers who have over $250,000 of advertised merchandise, so to meet this they artificially jack up the prices of a few items. Just a guess on my part and if anyone has a better explanation let me know.
Here's the link to the eBay listing:
https://www.ebay.com/itm/Model-A-Ins...4AAOSweW5VB4J8