[xienze]

There are already services that do this. I've seen ads for a shoe service (name escapes me) and a clothing service (Gwynnie Bee).

[mbreese]

Zappos (owned by Amazon) has unlimited returns for a year. It makes shopping for shoes really convenient — you can order multiple sizes, styles, etc and just send back the ones you don’t want to keep.

The downside is that you buy them all and get a refund on return.