Fashion buyers and manufacturers have sample sales all the time. There are loads of prototypes that get made before an official order is shipped (for quality control purposes, and so that buyers know what they've ordered). This is contractual. Buyers can end up with 10 samples for one order alone and rails FULL of samples that they need to keep for a certain length of time so that no one sues anyone.
Only problem that I foresee is that samples are always in "sample size" and unless you are this size (mannequin size), chances are high that you’re not going to benefit from the sample. I’d love to know if things are different for the Editors Closet.