Ebay

Ebay time involved finding product to sell all the time
It free's up lots of time listing because you will be creating one listing for a product that you can sell over and over again
Hardly any time involved with constant pictures, measurements, creatively writing descriptions, researching products over and over again with each used item.
Packaging cost can be reduced because you are selling the same items over and over which allows you to buy packing in bulk for discounts.