I am fond of 3D engraving on aluminum and especially like unplated coins.
I am unable to find any in the US for less than $5+. I ordered some from China and they were tied up in customs for several weeks and am wondering if anyone has a source in this country? Thanks gene
That’s generally the problem… most of us have Chinese machines as we can’t afford the US models… 
Some of these people that sell them, have them warehoused locally or at least in the USA. I’ve ordered stainless and brass coins that show up in a day or two.
Everywhere I’ve found stainless steel blanks in the US I can’t afford them, so I wait for the Chinese product to work it’s way here if delayed..
Only my laser was delayed because they couldn’t unload it. 
Tariffs might make them more expensive if you live in the USA, we’ll have to see.
So… as I was thinking, order/stockpile a bunch of them while still available and just be patient. I have always been quite patient but in my dotage I am seeing where it may not work out as well. Thanks gene