Bond agents have a standing security agreement with local court officials, in which they agree to post an irrevocable "blanket" bond, which will pay the court if any defendant for whom the bond agent is responsible does not appear. The bond agent usually has an arrangement with an insurance company, bank or another credit provider to draw on such security, even during hours when the bank is not operating. This eliminates the need for the bondsman to deposit cash or property with the court every time a new defendant is bailed out.
Before you spend money on bail, hire Mr. Torri to see if he can get you out on your own recognizance so that you don't have to pay for bail. There are no guarantees, but if you are a low risk for failing to appear, you may not have to spend money on a bail bondsman.