Last week I sent out seven packages filled with calendars. Two to the UK (I promised my sister one as well) and five to North America. The first ones to be stamped were the ones to the UK. The next one had to go to Canada and I was pleasantly surprised by the cost of the stamp. However, I wasn't that happy about the one that came after that to the USA. It was double the amount! Then another Canada and it was cheap again, then another USA and that also was cheap. So, the clerk went back to the first USA one and put it on again. And again: double the amount.
Fortunately the clerk was a clever lady and she looked at the weight. Turned out, the weight for that one package to the USA was two grams more than all the other ones. What to do in that case? Well, ask for a pair of scissors and cut two grams of paper off. Which is exactly what I did. I cut off the two grams, the clerk weighed the package again and this time it came in under and the packages were sent off.
(Now I just hope I didn't cut off any important bits of the envelope, like the bit that holds it all together...)