Just discovered this site! am just starting this program though Susan Cachay (www.avivaallergy.com). She was recommended to me by someone I work with who said she was really happy with the support, etc., she was getting. I think the initial cost is the same as Dr Wilson's but you also get the interpretation booklet from the lab which not all practitioners get. If you don't get that, I think it is $50 less but Susan said it contains really useful/helpful information and it was a good idea to get it at least for the first test. She is also doing a 20% off special for the summer (at least I was told....) so you might want to mention that if you contact her. I'll post more once I'm into it but so far happy..... I am just waiting for my results.