@sportage
Trump is posting a bail through a bondsman. He's paying the bail bondsmen 10% to put up the $200k for him. That 10%, or $20k, is a fee to the bail bondsmen and he will not get that back. Usually the bail bondsmen will also require some sort of collateral, such as a house, car, etc.
Normally when you post bail, you must satisfy all required court appearances, and any other terms of the bail. Once that happens, you get your bail money back.
In this case, the bail bondsmen will put up the entire $200k. They charge the defendant 10% of the full bail amount. They assume all risks. Should Trump satisfy all court requests, they get their $200k back. The $20k is their profit. Should Trump not satisfy all court requests, the court keeps the $200k. At that point, it is up to the bail bondsmen to go after Trump for the bail money owed.