GGG
The most common type of Mondo grass that is available is Ophiopogon japonicus. There are many listed cultivars that range in size(height) from 1" to ~18", classygroundcovers.com(Blairsville, GA) lists some. plantdelights.com has a number of Japanese cultivars listed and you might peruse classic_groundcovers.com/catalog.html (Athens, GA)for ideas. They are wholesale to the trade only, but I'm sure some retail nursery in your area carries their products.
Growers Outlet usually has the Dwarf type, 'Nana' available in 4" for $1.
White Lilyturf, Ophiopogon juburan, is sometimes available and so is Black Mondo, Ophiopogan planiscapus 'Arabicus', but is always expensive.
Hope this helps a little and good luck with your project!
Rb

razorback, it occurred to me that I am of course thinking that mondo grass and liriope are the same thing. I think I want regular mondo grass. I'm trying to get rid of liriope! I like the habit of the mondo better.
I have someone who can purchase the mondo wholesale for me, so thank-you for pointing out those places are actually in Georgia!!!

GGG

GGG
Only a suggestion...
You might want to consider adding a few of the colorful Carex species and cultivars that really brighten up a shady or semi-shady location. There are several that are very cold hardy and evergreen and require only minimal trimming in the spring. One of my favorites is Carex morrowii 'Aureovariegata', a low growing(about 10"), with a weeping habit. Once established, it can tolerate long periods without rainfall.
The link below lists a number of species and cultivars that are commonly available and used in gardens.
Rb

Here is a link that might be useful: Carex