Irrelevant nitpick, but including punctuation in their trademark makes their marketing materials pretty hard to read: "Not only are Sold. boxes free, but they come pre-paid, pre-labeled, pre-insured, tracked, and filled with bubble wrap"

Reading this stuff requires two passes for me.

Anyway, neat company. Unfortunately I don't think I have anything they would be willing to sell. This is something I would be interested in trying if I did.