Hi I am new here but I have been reading for a month or so. I don't know how much the tests should cost... but I ordered one on-line for about $200 from Dr. Amin at parasitetesting.com. I have read that he is one of a couple that test for many parasites that regular docs don't generally pick up.
I hope this helped. I know how frustrating it can be when you see how many people read your post but no one responds. :(