I have purcahsed Koi from a couple of different sources here in the Atlanta area. If you have good experience with other vendors please use the contact page and send them to me to add here. Vendors must identify themselves. For show winning koi, you will need to find an importer and take a trip to Japan.
Wet Pets – Dalonega – beautiful japanese koi from the ogata koi farm Kurume-city, Fukuoka Prefeture, Japan. Owner (Chuck Jones) will provide a good education too. Good place to visit before you build your pond. I now have 3 showa from WetPets and all are beautiful. Worth the drive.
Annual Atlanta Koi Club Auction – Great prices for size and quality. May each year. See atlantakoiclub.org for specific dates.
Atlanta Watergardens – Cheshire Bridge Rd. Small selection but good prices. Focus is on watergardens so carries a wide variety of fountains, statues, and non-fish items.
Atlanta Koi & Pond – Chamblee/Doraville Great selection of high quality Koi. Staff is very friendly and knowledgeable. James (owner) is a pond installer and seller of equipment. Not really a retail equipment store front.
Splendor Koi – Marietta – Largest selection of Koi I have seen in the metro area. Wide variety of quality, sizes, and price ranges. Also sells pond supplies. You can beat his prices online for equipment.
Kol Koi – Kennesaw – small selection of mediocre Koi. Does sell nice wakin double tail goldfish. Also sells pond and birding supplies.
Wakoola – Alpharetta/Cumming – Small selection but good source for pond grade small koi. Good pond supply location. Also carries a selection of fancy goldfish.
Individual sellers also list their fish for sale on CraigsList.com. You should visit sellers pond and assess conditions before buying. These can be some of the best bargains if sellers are thinning their schools or closing a pond. Buyer beware of sick fish. Use caution if meeting with cash in hand.
Ebay has several auctions for Koi. Quality varies by seller and shipping can be expensive. Combine wins from single seller to save on shipping.
www.kodamakoifarm.com/ has a koi auction and represents a wide variety of breeders. Combine orders to save on shipping.
Iowa USA – www.kloubeckoi.com/ is an Award winning breeder with online purchasing. Also carries food, equipment, and other items.