Buying First Class Stamps

i don't know how much post is actually stamped. Cas most goes for a frankin machine, certainly anything that's sent by anything above us. We all buy first class stamps at yo, christmas and things like that. And we'll buy a hundred of them cause we think we've got friends - but then there are only 75 left. So i guess there's a commercial consideration for people that buy stamps that er. You knowtha, it's a way of extracting a little more out of your occasional stamp user.