This will weed out a lot of sellers: (Less then 95% feedback and you can't sell.)
Sellers are expected to perform in a manner resulting in a consistently high level of buyer satisfaction. If, over a 90-day period, a seller's interactions with buyers result in greater than a 5% level of buyer dissatisfaction as evidenced by negative/neutral feedback and/or Item Not Received complaints, that seller will be considered in violation of eBay's Seller Non-Performance policy. Note we're currently not including Detailed Seller Ratings in the enforcement of this policy since they're so new to the marketplace.