I recently bought a Trumper's almond refill and while the box says it weighs 80g, when I weighed it myself and it came in at 100g. What prompted me even bothering was that I recently sold a Trumper's soap. When I weighed it to see how much was left, I was surprised to see that it weighed 79g (I was sure that I had used more than 1g of soap). I assume that one must have weighed 100g initially as well. I'm not complaining, but why the discrepancy?