When you view your open jobs, you'll see which attorneys have submitted bids and the dollar amount of those bids. If you click to expand the bid, you'll see a personalized message from the attorney, which should give you a better idea of who the attorney is and the work that their bids covers.
Additionally, you'll be able to see a breakdown of fees, such as how much of the bid goes towards a filing fee as opposed to the attorney's rate.