.380 gauge/holder for trimming brass.

ISO https://leeprecision.com/gage-holder-380-auto.html
Found dies at: https://ludcos.com/
He has plenty of dies, 9mm included. Will only sell you primers if you buy a press, even then it's a 500 limit. He did not have the gauge/holder though.
I found this item on Amazon but I am not interested in paying scalper prices.

Thank you to the gent who pm'd me about Titan Reloading. Price was so low I had to research the company to find that it was very legitimate and is mentioned on Lee's website. Shipping was more than the part but was reasonable. Only mentioned that about the shipping to again praise their pricing.