The expiration date of your visa is the last day you may use the visa to enter the United States. It does not indicate how long you may stay in the United States. Your stay is determined by the Department of Homeland Security at your port of entry.
In some circumstances, a person may be released from custody without bail and be given an order to appear, with certain conditions as governed and directed by a court-affiliated agency. Project Remand ('PR'), a Ramsey County pre-trial court service program, is one example of such an agency.
Like discounts, the general costs in your area depend on the locale's statutes and regulations. Bonding agents are generally licensed and regulated by the state. If you are interested in the cheapest bail bonds in your area, you can visit here to find out what the rates that allowed by law in your area.