I'm in dire need of some good shoes to wear at the dealership. The ones I have that I thought would work are going to kill me if I wear them for too much longer--they just have too much of a heel on them for the amount of walking I do. Renee has suggested Born shoes and they look like they'd work, but I can't seem to find a local store that stocks them. Has anyone ordered from Zappo's before? How long do they take to ship?