Bid A Dollar has a seller reputation system. All users who buy or win an item from a reseller are able to vote on that item and their service using a scale from -5 to 5 with positive numbers reflecting a positive experience and negative if the experience and item are not what was expected.
When a user has voted on items they have purchased their vote gets tied to two values, a Store Rating and a Store Reputation.
The Store Rating is an average of all votes submitted for the items sold through their store.
The store reputation is the sum of all positive vs negative votes. For any vote that is greater 0 the reputation score is incremented by 1 and for any vote less 0 the reputation score will be reduced by 1.
Currently Bid A Dollar does not provide buyer reputations