Mafac hoods are getting scarce. I picked up a set earlier this year off the auction site. Prices are all over the map. Simplex Criterium shifters are easier to find. There's a set up there now, so far the price is still pretty reasonable.
I got an account with this site and posted up a WTB when I was looking and got a response within a day or so. Might be worth the money to do it.
Kurt