Rhodium is about $35,000 a troy ounce. Rhodium is produced in nuclear reactors.
I know a bloke in Iran. I used to know a bloke in N Korea. I know a bloke at a platinum group metals refiner. So, get them to organise extracting the Rh from the spent fuel and profit!
Unfortunately, the Rh extracted is itself a radioactive isotope.
Now, that drawing board, where is it?