Wikipedia
iOffer is a San Francisco-based online trading community that was launched on May 1, 2002 by Steven Nerayoff. As of February 2008, it claimed to have nearly one million total users, including approximately 75,000 sellers, although this information cannot be independently verified, nor is it known how many of these users are active.
iOffer deviates from the online auction business model and instead adopts the "negotiated commerce model", characteristic of garage sales and flea markets, operating on the basis of negotiation between buyers and sellers rather than bidding. When a negotiation concludes successfully (i.e. a transaction occurs), iOffer charges a "final value fee" based on a sliding scale. The website advertises this distinction, claiming: "This is not an auction. It's better!"
iOffer permits free listing of items for sale, charging fees only when items are sold or for premium listing services (such as bolding, highlighting, and listing on the home page). Sellers can post an asking price or request offers; buyers, in turn, can purchase an item at its asking price or make an offer. Users can also post "want ads" at no charge and barter. All transactions are recorded and can be viewed by other users.
iOffer competes with other similar negotiated e-commerce websites, as well as online auction sites such as eBay. According to Greg Holden, author of multiple books about eBay, from the perspective of sellers iOffer is both a "complement" and "good alternative" to eBay. Through iOffer's software program Mr. Grabber, sellers can relist items from sites such as eBay, and Overstock.com onto iOffer en masse, as well as import eBay feedback ratings.
Unlike sites such as eBay, however, iOffer provides little in the way of buyer or seller protection from fraudulent and other problem transactions. However, it does operate a C.O.P.S. scheme, similar to eBay's VERO program for items such as those involving counterfeit goods. Additionally, purchases with PayPal may be covered under PayPal's buyer protection program for items that are not received or not significantly as described.
While iOffer does not provide customer service via telephone, email customer service is available through the Helpdesk although form letter responses are frequent.
In a January 2011 survey of more than 2,800 online sellers by the website AuctionBytes.com, iOffer ranked 16th out of 16 marketplaces with an overall rating of 3.6 out of 10, just behind eBay's 14th place rank with 4.2 out of 10. iOffer's highest marks were for Ease of Use (4.42/10) and its lowest marks were for Would Recommend This Site (3.14/10).