[doc30]

I had a partner with 3 teenage sons. He posted three $30,000 cash bonds --- bonds that bore interest at 5-6%, if I recall.

Must be nice to be able to have $90K cash on hand to do that. The vast, vast majority of people in America do not.

[MeanWestTexan]

You don't necessarily have to use cash. You can pledge part of an asset (e.g., your house).