**REDUCED** I bought this at a show this passed Winter for over a hundred bucks. I planned to vaccinate all my birds with it but, have since changed my mind. If you are having a difficult time with MG, this may be a good option for you. Even if you plan to protect your existing birds from contracting it, this may be a good option for you. This particular bottle 104 milligrams, has been stored in my refrigerator and doesn't expire until 3/27/2014. It's the blue top and offers 1,000 doses. It must be used completely when opened so be ready to do all of your birds or share with a friend. http://www.drugs.com/vet/avipro-104-mg-bacterin-can.html It will be shipped with insurance and delivery confirmation.