You go shoe shopping and find a lovely pair that feels really comfy in the boutique and then the next day you wear them, only to find your aching feet dotted with blisters... Happens to me all the time! And the heels I've bought aren't very high, only about 2 to 3 inches. Even some of the shoes that have been broken into still give me blisters. Also, somehow the first time I wore my 3 inch Guccis to work they felt so comfy, the next time I wore them my feet hurt and got blisters! It's kind of impossible for me to determine how comfy the shoes will be... I don't walk that much at work.