Gday Bramps and welcome.
I did a quick search and I could only seem to find 12 volt grinders in America and they were whirly blade types, which are to avoided like the plague for espresso use.
Zassenhsaus (hand grinders) have a good repuation for quality, but are fairly expensive.
I dont know where youre located, but you could try one of your local site sponsors and see if they sell hand grinders. Otherwise, google up hand+coffee+grinder and you should come up trumps.
Good luck with it.