I only posted it as that is how I learn things when I travel from other people's experiences. I have learned my lesson from that one and I do like the idea of just saying a specific amount that helps. I did get out and watch the pump the whole time but this fellow was just plain in a bad mood. Maybe he was having a bad day. It is not the few dollars that matter to me in general, it is just the concept and treatment. I am ok with rounding and that happens any time you use a different currency. In any case just thought I would share and not a big deal.