Here at my office, you could put a nickel into the soda machine, hit the coin return and it would spit out a quarter! So, you could get your 50¢ soda for 10¢ (if you did it twice) And, if you had a bunch of nickels, you could actually make money on the deal. It was sort of an unspoken secret around the office. After a new hire was broken in.. someone would reveal the soda secret to them once they were worthy and could be trusted. I realize it's dishonest, but we wouldn't abuse it.. I would only resort to it when I needed to or if I had an abundance of nickels in my pocket. However, over the past few weeks, the "exact change light" was flickering and the whole coin slot mechanism was making a horrible buzzing noise. Apparently, its generosity over the past four years or so has taken its toll. I don't know if I'll ever get used to paying full price for soda. Just had to vent.