Is it hardy in your area?
http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/ornamental_grass/imperata_cylindrica.html
I saw some on Ebay but it was expensive.
If you Google for " Japanese Blood Grass Mail Order" you'll find some sites and will need to sort through.
This is just one.

Here is a link that might be useful: Imperata

You are having a hard time finding it because it is on the invasive list, even though it is not hardy many places. Contact me if you need sources.

Thanks for both of those follow ups I have decided to use a different ornamental.
Rissa 7

Does 'Rubra' flower (or revert) much, or is it being curtailed by mistake, because the typical (species) has become a pest in some states? In my climate (perhaps to cool for flowering) it seems like I see mostly the leaves, with the main nuisance factor being that it creeps by underground stems, possibly occupying a larger space - in the garden - than was intended.