I've seen Prof de Meirleir twice in the last year. The first visit cost me £3500 and the second £2000 - this included travel and hotels etc. I expect further visits to be much less as we zero in on the specific problem with the immune system. Almost all the costs were for blood tests and some tests on tissue samples, along with an exercise capacity test. To see him the appointment is only £80. The costs of medication can be expensive. Prof de Meirleir is a big fan of GcMAF and 4ME - these can cost around £300 / month total. I've seen both Dr Enlander and Prof de Meirleir. Both are specialists in the field. Enlander is probably a bit more personable. That said, given the new resources now available for de Meirleir at the WPI, I think you'll have more luck getting to the cause of your illness with him.