I was at a show the 1st weekend of August which is near Canada but in US.
One of my customers from over the border had picked out a small pot but was short the cash and had forgot here check book.Her friend had her visa card and was to shed her later that night. I wrapped up the pot and wrote her a I owe you an back of card.
Check came yesterday and she wrote it for the difference of currencies so I did not loose any money. She wrote me a very nice note about trusting her which no one seems to do anymore.
When I do this I have a customer for life. You need to feel the situation out as its not for every forgotten purse.But when its right its very solid.