We didn't actually see Harry Hong. This was nearly 10 years ago and we saw someone very expensive who I can't recommend. He did NAET. After that I took a BioSet seminar from Ellen Cutler, and then I was able to do the BioSet myself.
I believe in BioSet more than NAET, and I mentioned Harry Hong because from what I know he is a good BioSet practitioner. I don't know what he charges, but a woman who saw him for eczema told me that he tested her, then gave her a bunch of vials and taught her how to do the clearings at home. This woman is unmarried and works for a church, and is far from wealthy. So he seems to be reasonable and respectful of people's budgets.
This woman had a horrible, horrible case of eczema -- the worst I've ever seen. When last I saw her she was nearly free of it, and credited Dr. Hong. That's just one testimonial, but it's more than I have for any other BioSet practitioners in the Chicago area.
BTW, no acupuncturist in Illinois will accept insurance, not just Dr. Hong. That's because insurance does not cover acupuncture in Illinois, with rare exceptions. Acupuncturists -- including, I'm sure, Dr. Hong -- will give you a "superbill" (medical receipt) that you can use to file with your insurance company for reimbursement if you wish. Look at your policy to see whether it covers acupuncture or not -- don't take your insurance company's word for it.