What kind of doctor prescribed it for you? An immunologist? Seems more accessible than LDI. Why was the environmental and food allergen chosen? Do you have a lot of environmental and food allergies? How much does LDA cost?
An allergist prescribes it for me. Environmental and food allergies are a key feature of my illness, thus the decision to pursue the relevant course of treatment. Based on what I've read, doses, which are administered bi-monthly, can range from $30 each to $300 each, depending on the provider you choose. My doctor is in Brooklyn and charges the $300. Most other doctors I see charge less than $100 per dose.
Note that this is not a common treatment, so you'll have to find a practitioner in your area. Here's a list I found of doctors: http://www.drshrader.com/lda_physicians.htm
I'm not advocating the treatment yet, and won't do so until I've had personal, long-term success with it. Fingers crossed, though.