RiscOS hardware in the US?

[Mr Ian Primus]

In one of my mental wanderings, I remembered that I
had always wanted to play with RiscOS, but never had
found a machine that would run it - so I did a little
web hunting and turned up nearly nothing. Even eBay
had no listings for such gear. I know the Acorn
Archimedes runs RiscOS, but what else? I'm not sure
that the Acorn was ever even sold in the US.

I know, I can probably just go get an emulator, but
I'd still love to play with a real computer. Did any
US-available computer run RiscOS?

-Ian