It's Gotta Go - http://www.itsgottago.com/
An e-commerce marketplace where buyers and sellers can come together to find new, used, discontinued products, collectibles, antiques or services.
Kill Fish - Auction Shop - http://www.killfish.com/
Dedicated to anglers and outdoor oriented folks. Offering a secure safe way to sell their niche focused goods - mainly fishing and outdoors related products, items and services.