For me, when I get these odd number donations, I round up. So, in this case $260 really means she will be getting $270, since I probably won't have a chance to stop by 7-11 on my way to the date to break a twenty into two tens. I don't know why, but I try to show up to dates with big bills, 100's and 50's, with 20's only if I have to hit an atm instead of the bank. Plus, normally, if it is your first date, you are trying to make a good first impression, and you have to admit, nice crisp benny's are more impressive then well worn 20's. If you have seen her before, and she is good enough to visit again, she is worth it anyway, imo.