http://blog.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/opsec/haveno-cashbymail/index.html
That way in case if there is a dispute, the arbitrator will be able to see who's at fault if there are any steps along the way that have not been respected. In total per cash by mail transaction (assuming the final envelope weighs less than 100grams), the cost involved for the seller should be around 2 euros in France (including tracking), assuming the seller sends the envelope within the same country, and that he buys enevlopes, mylar bags and tamper...