I read his older Tweets yesterday. He mentioned something like this. I think it was 10 control, 10 long haulers, 10 CFS/ME patients, long-term surveillance for all of them, amounting to 30k EUR each for the testing.
Makes me wonder though why the testing isn't payed by insurances. They only need a physician who orders the tests, don't they? If this allows them to enroll more participants, I would go this route. Even if it's just a 1-2 tests for the major subgroup.