Just a quick bit of internet lawyering. Much the same way that jail and prison are not synonyms, but two distinct items. Bail and bond are two distinct items.
Bail is where you give cash as assurance that you will return for trial. You get that back at the end, guilty or not, so long as you show.
Bond is where you DON'T have cash and instead contact a bondsman who, for 10% of the bail that they keep (they get the whole bail back) ensure you show up. That's what Dog The Bounty Hunter did, other than meth and racism.
Even if Chris and Barb can't post bail, they can probably get a bail bondsman to spring him.