If you want to auction it, send it to fleabay and endure their gouging fees and the possibility of being scammed by a buyer reporting no delivery etc.
If you are not sure of your pricing you could use previous ebay sales of the same item as a guide for your opening price. Then like most other sellers here on Photrio you conduct a Dutch auction. This means if your item does not sell quickly you periodically reduce the price until someone buys it and then both parties should be happy.
Don't just fling it up here and invite us to tender for it. Sealed bids or not.