I did order from them in the spring of 2012 and both the chickens and the guineas did well. Ordering from a hatchery is a great place to start. Spring 2013, I had three orders from three different places, One hatchery in Missouri, Mr. Duane Urch in Minnesota, and another breeder that had won a national award in the breed I have fallen in love with, this spring I will try incubating from the 2013 hens.
It's usually a sanitary problem with the facility. I'm unsure how to know if they have it. Probably a type of testing. Just be cautious with ANY birds you get. They do have nice birds though.
Check with a local feed and seed store. They may allow you to get a small qty. Tractor supply has them in the spring. I am not sure if they buy from Mt. Healthy or not. Check.