So I was getting a fountain drink at the chevron station, and the guys were hanging out behind the counter, putting the plastic holders back on cans. At first I thought they had spilled some cans and were putting the holder back on. Then I saw one of them reach into a box where they had a whole role of these things and pull another few off. It turns out the station owner buys the cans without the plastic holders, then has the employees stand around putting them on manually. Its not that they're saving the money of not buying the holder, cause obviously they've got a whole box of them there. Somehow its cheaper to have people manually stick the things on than pay the bottling company an extra 0.3 cents a six pack to have a machine do it.
Must be really rewarding work too.