Aloha! I am one of the Kona Coffee Farmers.
I would be happy to send you Kona Coffee, but I am out. I can either go out and pick, or play on the computer and watch TV

The best place is to go to the farmers website
http://KonaCoffeefarmers.Org and investigate the many farms listed there. The KCFA seal is only allowed on coffee which is 100% Kona.
Those farmers all sell 100% Kona.
Like wines, each Kona coffee farms coffee will taste a bit different. Maybe we should get together with other farmers and offer a sampler
Be careful if buying online from Ebay, etc because many people are selling a blend. A blend generally has 10% Kona or none and what coffee is in there is usually from overseas somewhere and not specified. And yes, China is now growing coffee.