Normally, I would find the whole "I would never spend that much on a purse" talk rude, but I don't think the SA was trying to be rude or smug. She was just joking around that she could have a bunch of pairs of shoes instead. Obviously, she probably spends more on those shoes than she realizes. People who buy large numbers of lower priced bags, shoes, or anything else often don't realize that they spent enough on all those cheaper items to be able to have a more expensive item. Everyone was smiling and giggling, so I just let the whole talk about spending slide.